Experimental design is one aspect of a scientific method. A well-designed, properly conducted experiment aims to control variables in order to isolate and manipulate causal effects and thereby maximize internal validity, support causal inferences, and guarantee reliable results. Traditionally employed in the natural sciences, experimental design has become an important part of research in the social and behavioral sciences. Experimental methods are also endorsed as the most reliable guides to policy effectiveness. Through a discussion of (...) some of the central concepts associated with experimental design, including controlled variation and randomization, this chapter will provide a summary of key ethical issues that tend to arise in experimental contexts. In addition, by exploring assumptions about the nature of causation and by analyzing features of causal relationships, systems, and inferences in social contexts, this chapter will summarize the ways in which experimental design can undermine the integrity of not only social and behavioral research but policies implemented on the basis of such research. (shrink)

Neuroscience is a laboratory-based science that spans multiple levels of analysis from molecular genetics to behavior. At every level of analysis experiments are designed in order to answer empirical questions about phenomena of interest. Understanding the nature and structure of experimentation in neuroscience is fundamental for assessing the quality of the evidence produced by such experiments and the kinds of claims that are warranted by the data. This article provides a general conceptual framework for thinking about evidence and experimentation in (...) neuroscience with a particular focus on two research areas: cognitive neuroscience and cognitive neurobiology. (shrink)

Philosophical tradition has long held that free will is necessary for moral responsibility. We report experimental results that show that the folk do not think free will is necessary for moral responsibility. Our results also suggest that experimental investigation of the relationship is ill served by a focus on incompatibilism versus compatibilism. We propose an alternative framework for empirical moral psychology in which judgments of free will and moral responsibility can vary independently in response to many factors. We (...) also suggest that, in response to some factors, the necessity relation may run from responsibility to free will. (shrink)

This entry summarizes an emerging subdiscipline of both empirical bioethics and experimental philosophy (“x-phi”) which has variously been referred to as experimental philosophical bioethics, experimental bioethics, or simply “bioxphi”. Like empirical bioethics, bioxphi uses data-driven research methods to capture what various stakeholders think (feel, judge, etc.) about moral issues of relevance to bioethics. However, like its other parent discipline of x-phi, bioxphi tends to favor experiment-based designs drawn from the cognitive sciences – including psychology, neuroscience, and behavioral (...) economics – to tease out why and how stakeholders think as they do. (shrink)

Research in experimental philosophy has increasingly been turning to corpus methods to produce evidence for empirical claims, as they open up new possibilities for testing linguistic claims or studying concepts across time and cultures. The present article reviews the quasi-experimental studies that have been done using textual data from corpora in philosophy, with an eye for the modeling and experimental design that enable statistical inference. I find that most studies forego comparisons that could control for confounds, (...) and that only a little less than half employ statistical testing methods to control for chance results. Furthermore, at least some researchers make modeling decisions that either do not take into account the nature of corpora and of the word-concept relationship, or undermine the experiment's capacity to answer research questions. I suggest that corpus methods could both provide more powerful evidence and gain more mainstream acceptance by improving their modeling practices. (shrink)

Book Description (Blurb): Cognitive Design for Artificial Minds explains the crucial role that human cognition research plays in the design and realization of artificial intelligence systems, illustrating the steps necessary for the design of artificial models of cognition. It bridges the gap between the theoretical, experimental and technological issues addressed in the context of AI of cognitive inspiration and computational cognitive science. -/- Beginning with an overview of the historical, methodological and technical issues in the field (...) of Cognitively-Inspired Artificial Intelligence, Lieto illustrates how the cognitive design approach has an important role to play in the development of intelligent AI technologies and plausible computational models of cognition. Introducing a unique perspective that draws upon Cybernetics and early AI principles, Lieto emphasizes the need for an equivalence between cognitive processes and implemented AI procedures, in order to realise biologically and cognitively inspired artificial minds. He also introduces the Minimal Cognitive Grid, a pragmatic method to rank the different degrees of biologically and cognitive accuracy of artificial systems in order project and predict their explanatory power with respect to the natural systems taken as source of inspiration. -/- Providing a comprehensive overview of cognitive design principles in constructing artificial minds, this text will be essential reading for students and researchers of artificial intelligence and cognitive science. (shrink)

Teil I »Psychologische Ästhetik für transdisziplinäres Design« -/- Kapitel I »Empirische Ästhetik – Der Konflikt zwischen leichter Verarbeitbarkeit, sparsamer Codierung und neuronaler Aktivierung im Beobachtersystem. Eine Untersuchung über das Wesen der ästhetischen Erfahrung. -/- Jede Designpraxis verlangt täglich eine Vielzahl von Entscheidungen, welche die Wahl von „Etwas vor dem Hintergrund anderer Möglichkeiten“ darstellen. Diese lassen sich als Probleme einer Präferenz-Ästhetik interpretieren, wobei innerhalb eines Repertoires von Alternativen die attraktivste gewählt wird. Eine empirische Ästhetik ist somit ein notwendiger Bestandteil von (...) Designtheorie. Die Überlegung, wer in welcher Situation warum was bevorzugt, führt zur Forschungsfrage: »Was ist der elementare Mechanismus für eine ästhetische Erfahrung?« In der Literatur zur empirischen Ästhetik finden sich vier wesentliche Theorie-Gruppen: (1.) Es wird eine Präferenz für einfach zu verarbeitende Stimuli behauptet und z.B. mit der Processing Fluency begründet. (2.) Andere Ansätze erklären eine maximale Stimulation des Beobachters durch komplexe Objekte zum Ideal, was auch die ästhetische Erfahrung maximieren soll. (3.) Eine dritte Gruppe vermeidet die Probleme der ersten beiden, indem eine mittlere Komplexität als Präferenz behauptet wird. (4.) Und schließlich gibt es Ansätze, die auf eine integrierende Theorie letztlich verzichten und einzelne Phänomene bzw. Effekte katalogisieren. Eine Liste ungelöster Probleme formuliert die Minimal-Anforderungen an eine integrierende Theorie. Hiermit wird geprüft, ob bzw. inwieweit die Integrative Ästhetik von Schwarzfischer (2008 und 2014) jene Probleme lösen kann. Dieser Ansatz schlägt spezifische Re-Codierungs-Prozesse als basalen Mechanismus jeder ästhetischen Erfahrung vor. Hierzu wird ein Prozess-Modell entwickelt, welches die Integrative Ästhetik überprüfbar macht. Bei der Modellbildung werden manche Konzepte der Integrativen Ästhetik erweitert und andere präzisiert. Auch die Anwendungsmöglichkeiten werden durch das Modell vielfältiger, da es nicht nur als Erklärungsmodell, sondern zudem als Gestaltungsmodell einsetzbar ist. Insgesamt zeigt die Überprüfung der Integrativen Ästhetik und des Modells, dass die Gütekriterien in einem vielversprechenden Maß erfüllt werden. Die grundsätzliche Quantifizierbarkeit wird aufgezeigt sowie die Relevanz und die Anwendbarkeit für das Design nachgewiesen. Die Forschungsfrage kann somit als hinreichend beantwortet gelten: »Der elementare Mechanismus für eine ästhetische Erfahrung scheint ein Re-Codierungs-Prozess zu sein (der auf der Nutzung von In­varianzen basiert), welcher extensionale Daten zu intensionalen Gestalten transformiert, wobei eine Ressourcen-Entlastung stattfindet und der Gültigkeitsbereich der Codierung erweitert wird (was nach Jean Piaget als Dezentrierung bezeichnet wird) – was jeweils durch eine ‚Beobachtung zweiter Ordnung‘ festgestellt wird.« -/- Teil II »Transdisziplinäre Ästhetik im Dialog« -/- Kapitel II.A »Profane und heroische Beobachtungs-Experimente: Kunst-Ästhetik als methodisches Artefakt.« -/- Es reicht nicht, eine Liste mit vorgeblich ‚schönen Dingen‘ zu erstellen, um ‚das Schöne‘ zu verstehen. Piaget & Garcia (1989) unterscheiden drei Stufen in jedem Erkenntnis-Prozess: 1. isolierte Fakten, die unabhängig von einander analysiert werden; 2. konkrete Transformationen, durch welche diese Fakten mit einander verbunden sind; 3. eine Struktur, die alle denkbaren Fälle konstruierbar macht. Sie nannten diese drei Stufen ‚intra‘, ‚inter‘ und ‚trans‘. Dies kann auf das ‚höhere Erkenntnisvermögen‘ angewandt werden wie auf das ‚niedere‘. Wissenschaftlichkeit setzt nach Popper die Falsifizierbarkeit einer Theorie voraus – und damit Prognosefähigkeit. Prognosen müssen über den Bereich der bereits bekannten Fälle hinausgehen, und finden sich folglich primär in der Piaget-Phase ‚trans‘. Diese ist davon gekennzeichnet, dass es über die Gegenstände hinausgeht (‚trans-objekt‘). Zu häufig werden Artefakte nur beschrieben (‚intra-objekt‘) oder einzelne, zufällig bekannte Transformationen von Material in Artefakte bzw. von Artefakt in Verständnis aufgezählt (‚inter-objekt‘). Erst eine ‚Integrative Ästhetik‘ jenseits von zufälligen Semantiken, jenseits von sozialen Exklusions-Rhetoriken der Künstler und der ‚Leisure-Class-Eliten‘ (nach Veblen) und jenseits der Hierarchisierung von Wahrnehmungs-Modi kann den Anspruch einlösen (‚trans-objekt‘). Daraus folgen u.a. separierbare Semantiken spezifischem Maßstabs, die sich überhaupt erst dann z.B. als ‚konventionelle Kunst-Auffassung‘ beobachten lassen. Zentrierungen auf solche Semantiken können demnach „als Kunst missverstanden werden“ – obwohl sie keineswegs das allgemeine Prinzip repräsentieren, sondern stets nur Spezial­fall bleiben. -/- Kapitel II.B »Das Gehirn als Hypothesenmaschine – Ästhetische Prozesse als Selbst-Test im Beobachter-System.« -/- Die historische Trennung zwischen Techne, Poiesis und Aisthesis scheint nach der „konstruktivistischen Wende“ obsolet geworden zu sein. Jede Beobachtung kann als Handlung betrachtet werden und setzt adaptive Aspekte schon voraus. Jedoch fehlte bislang eine tragfähige konstruktivistische Ästhetik, deren Gültigkeitsbereich hinreichend groß ist: So ist die Beschränkung auf Kunst ebenso unnötig wie jene auf Kommunikation in sozialen Systemen (also auf „Kunst-Diskurse“) oder auf eine Produktions-, Werk- bzw. Rezeptions-Ästhetik. Die definitorische Auflösung des Kunst-Begriffes (z.B. bei Gernot Böhme) löst diese Schwierigkeiten nicht. Im Wesentlichen bleibt die resultierende phänomenologische Ästhetik eine Rezeptions-Ästhetik. Ähnlich begrenzt bleibt der Anwendungsbereich der Informations-Ästhetik mit kybernetischen Wurzeln. Auch die Einbettung in eine evolutionäre Ästhetik oder Neuroästhetik scheint problematisch. Daher muss eine „Integrative Ästhetik“ sehr unterschiedliche Sichtweisen in sich vereinigen. Inzwischen klassisch zu nennende kybernetische, systemtheoretische oder informations-ästhetische Ansätze verwenden meist die Logik einer Bottom-Up-Verarbeitung (Input-Processing-Output), wie sie auch die kognitive Psychologie der zweiten Hälfte des 20. Jahrhunderts dominierte. Dass laut Schlicht et al. (2013: S.475) selbst im visuellen Kortex nur ca. 5% der neuronalen Verknüpfungen bottom-up verschaltet sind (und der „Rest” von 95% top-down oder lateral arbeitet), stellt auch die empirische Ästhetik vor Probleme. Dieser Beitrag stellt jene Integrative Ästhetik vor, welche diese Antworten auf diese Fragen zu geben vermag – und den genannten Beschränkungen nicht unterliegt. Der elementare Prozess einer ästhetischen Erfahrung besteht hier in einer Re-Codierung von extensionalen Daten zu intensionalen Codierungen. Durch die sparsamere Codierung stellt dies eine erhebliche neuronale Entlastung dar und erhöht zudem beträchtlich den Gültigkeitsbereich des Codierten. Vom Beobachter-System wird dies subjektiv als Dezentrierung (nach Piaget) positiv erlebt. Zentral ist, dass es nun mit einem einheitlichen methodischen Rahmen möglich ist, entweder bottom-up die Wahrnehmung zu analysieren oder top-down die subjektive Motivation (z.B. die erlebte Autonomie oder die erlebte Entlastung) des Akteurs zu thematisieren. Die Richtung der Prozesse wird umkehrbar. Zudem wird die konstruktivistische Wahrnehmungs-Handlung zu einer Art von Selbst-Test des Wahrnehmungs-Systems: „Funktioniere ich sensorisch und kognitiv überhaupt? Funktioniere ich korrekt, also konsistent? Und, funktioniere ich effizient?“ -/- Kapitel II.C »Beobachtende Systeme – Dezentrierende Gestalt-Integration als Basis einer Ästhetik des Alltags.« -/- An der ästhetischen Erfahrung irritiert traditionell, dass der Effekt bekannt ist, nicht aber die Ursachen und der funktionale Mechanismus. Dies leistete Mystifikationen Vorschub, was zu diversen metaphysischen Kunst-Ästhetiken führte: Der Künstler als Schamane oder Magier. Dieser Beitrag möchte dagegen einen systemsemiotischen Ansatz für eine empirische Ästhetik vorstellen. Die aktive Rolle des Beobachters im Wirkungszusammenhang soll den Blinden Fleck erhellen, aufgrund dessen sich das Phantom eines passiven Rezipienten und „quasi-aktiver“ ästhetischer Objekte so hartnäckig halten konnte. Ausgehend von gestalttheoretischen Überlegungen wird Gestalt als implizite, algorithmische Codierung begriffen. Neuere empirische Ergebnisse der „Neuro-Ökonomie“ postulieren einen Effekt der „kortikalen Entlastung“ (bei der Forschung nach der Wirkung von Marken). Der hier vertretene Ansatz verknüpft nun beide Aspekte und glaubt, daraus eine konsistente Theorie für die empirische Ästhetik des Alltags entwickeln zu können. Es muss jedoch ein weiterer Aspekt hinzu genommen werden, den Piaget „Dezentrierung“ nennt. Ästhetische Erfahrung wird dann definierbar als das Erlebnis eines Umcodierungs-Prozesses – oder genauer: als das Erlebnis einer dezentrierenden Gestalt-Integration durch das beobachtende System. Sowohl beobachtende Systeme als auch Gestalt-Integrationen sind in unserem Ansatz als multiple zu denken. Eine semiotische Differenzierung ist nun entscheidend: Die herkömmliche Informations-Ästhetik thematisierte nur die syntaktischen Aspekte des Stimulus, ohne den Beobachter in seiner aktiven Rolle zu begreifen. Gestalt-Integrationen samt deren dezentrierender Wirkung sind jedoch auch in semantischer und pragmatischer Hinsicht zu finden. Diese werden im Beitrag dargelegt. Denn erst so kann die Vielschichtigkeit ästhetischer Erfahrungen erklärt werden, wo z.B. syntaktische und pragmatische Aspekte konkurrieren können. Auch vordergründig destruktive Akte und Artefakte sind dann als Gestalt-Integrationen anderer Dimensionen oder differierender Bezugssysteme begreifbar. (Dies streift etwa auch Fragen der Ressourcen-Allokation.) Zudem muss die Kontingenz von Beobachtungs-Maßstäben, Wahrnehmungs-Modi, Struktur-Determinanten (des beobachtenden Systems) und kultur-semiotischen Prägungen mit in Betracht gezogen werden. Erst hierdurch wird der Möglichkeitsraum potenzieller Gestalt-Integrationen (der eigentlich aus einem präsentationalen und einem repräsentationalen Raum besteht) prinzipiell beschreibbar. Wenn auch die Probleme bzw. Grenzen der praktischen Durchführbarkeit entsprechender Analysen nicht unterschlagen werden sollen: Die Möglichkeiten entsprechen gut den Erfordernissen zur ästhetischen Analyse des menschlichen Alltages – schließen die Lebenswelten von nicht-anthropozentrischen Seinsformen aber wohl methodisch aus. Dieser Beitrag möchte ich primär eine empirische Ästhetik zur Diskussion stellen, die mir als Rahmen für die weitere Forschung sehr leistungsfähig erscheint. Und doch ist nichts weniger als ein theoriebildender Ansatz das Vorhaben. Eine der Konsequenzen aus diesem Ansatz ist die These, dass es sich bei Kants Diktum vom „interesselosen Wohlgefallen“ zwar für das Individuum um ein Apriori handelt, bei der Gattung Mensch jedoch evolutionär um ein Aposteriori. (shrink)

In this paper, a Magnetic Levitation (MAGLEV) train is designed with a first degree of freedom electromagnetbased totally system that permits to levitate vertically up and down. Fuzzy logic, PID and MRAS controllers are used to improve the Magnetic Levitation train passenger comfort and road handling. A Matlab Simulink model is used to compare the performance of the three controllers using step input signals. The stability of the Magnetic Levitation train is analyzed using root locus technique. Controller output response for (...) different time period and change of air gap with different time period is analyzed for the three controllers. Finally the comparative simulation and experimental results demonstrate the effectiveness of the presented fuzzy logic controller. (shrink)

A central feature of experimental development economics is the use of randomized controlled trials (RCTs) to evaluate the effectiveness of prospective socioeconomic interventions. The use of RCTs in development economics raises a host of ethical issues which are just beginning to be explored. In this article, I address one ethical issue in particular: the routine use of the status quo as a control when designing and conducting a development RCT. Drawing on the literature on the principle of standard care (...) in medical research ethics, as well as considerations of distributive justice in non-ideal circumstances, I argue that the practice of using the status quo as a control is ethically justifiable. However, I add an important qualification based on the natural duty of rescue to address the concern that my account is overly permissive. (shrink)

Why scientists reach an agreement on new experimental methods when there are conflicts of interest about the evidence they yield? I argue that debiasing methods play a crucial role in this consensus, providing a warrant about the impartiality of the outcome regarding the preferences of different parties involved in the experiment. From a contractarian perspective, I contend that an epistemic pre-requisite for scientists to agree on an experimental method is that this latter is neutral regarding their competing interests. (...) I present two medical experiments (on smallpox inoculation and Mesmerism) in which debiasing procedures such as blinding and data tabulation provided warrants of impartiality that made people agree on the experimental design even if they disagreed on the outcome. (shrink)

Multiple loop heat pipes which have two evaporators and two condensers in one loop are a kind of active heat transfer device. Since they have two evaporators and two condensers, the operating mode also becomes multiple. This work discusses the cases that multiple loop heat pipes were operated with one condenser at high temperature and the other at low temperature. To avoid the high temperature returning liquid and keep the multiple loop heat pipes work properly, the flow regulator which was (...) made of polyethylene was designed, fabricated and applied in this test. The effect of flow regulator was confirmed and analyzed. In the test that large temperature difference existed between two sinks, it can be found according to the result that the flow regulator worked effectively and prevented the high temperature vapor to enter the inlet of common liquid line, which can keep the evaporators and returning liquid to operate at low temperature. With the increment of heat loads and the temperature difference between two sinks, the pressure difference between two condensers became larger and larger. When the pressure difference was larger than the flow regulator’s capillary force, the flow regulator could not work properly because the high temperature vapor began to flow through the flow regulator. According to the test data, the flow regulator can work properly within the sinks’ temperature 0?C/60?C and the two evaporators’ heat load 30/30 W. (shrink)

Discussions of the non-identity problem presuppose a widely shared intuition that actions or policies that change who comes into existence don't, thereby, become morally unproblematic. We hypothesize that this intuition isn’t generally shared by the public, which could have widespread implications concerning how to generate support for large-scale, identity-affecting policies relating to matters like climate change. To test this, we ran a version of the well-known dictator game designed to mimic the public's behavior over identity-affecting choices. We found the public (...) does seem to behave more selfishly when making identity-affecting choices, which should be concerning. We further hypothesized that one possible mechanism is the notion of harm the public uses in their decision-making and find that substantial portions of the population seem to each employ distinct notions of harm in their normative thinking. These findings raise puzzling features about the public’s normative thinking that call out for further empirical examination. (shrink)

Binding specificity is a centrally important concept in molecular biology, yet it has received little philosophical attention. Here I aim to remedy this by analyzing binding specificity as a causal property. I focus on the concept’s role in drug design, where it is highly prized and hence directly studied. From a causal perspective, understanding why binding specificity is a valuable property of drugs contributes to an understanding of causal selection—of how and why scientists distinguish between causes, not just causes (...) from noncauses. In particular, the specificity of drugs is precisely what underwrites their value as experimental interventions on biological processes. (shrink)

This paper argues that whereas philosophical discussions of first-person methods often turn on the veridicality of first-person reports, more attention should be paid to the experimental circumstances under which the reports are generated, and to the purposes of designing such experiments. After pointing to the ‘constructedness’ of first-person reports in the science of perception, I raise questions about the criteria by which to judge whether the reports illuminate something about the nature of perception. I illustrate this point with a (...) historical debate between Gestalt psychologist and atomists, both of whom used first-person methods to investigate perception. (shrink)

It has been argued that supervenience generates unavoidable confounding problems for interventionist accounts of causation, to the point that we must choose between interventionism and supervenience. According to one solution, the dilemma can be defused by excluding non-causal determinants of an outcome as potential confounders. I argue that this solution undermines the methodological validity of causal tests. Moreover, we don’t have to choose between interventionism and supervenience in the first place. Some confounding problems are effectively circumvented by experimental designs (...) routinely employed in science. The remaining confounding issues concern the physical interpretation of variables and cannot be solved by choosing between interventionism and supervenience. (shrink)

In the late 19th century, physiologists such as David Ferrier, Eduard Hitzig, and Hermann Munk argued that cerebral brain functions are localized in discrete structures. By the early 20th century, this became the dominant position. However, another prominent physiologist, Friedrich Goltz, rejected theories of cerebral localization and argued against these physiologists until his death in 1902. I argue in this paper that previous historical accounts have failed to comprehend why Goltz rejected cerebral localization. I show that Goltz adhered to a (...) falsificationist methodology, and I reconstruct how he designed his experiments and weighted different kinds of evidence. I then draw on the exploratory experimentation literature from recent philosophy of science to trace one root of the debate to differences in how the German localizers designed their experiments and reasoned about evidence. While Goltz designed his experiments to test hypotheses about the functions of predetermined cerebral structures, the localizers explored new functions and structures in the process of constructing new theories. I argue that the localizers relied on untested background conjectures to justify their inferences about functional organization. These background conjectures collapsed a distinction between phenomena they produced direct evidence for (localized symptoms) and what they reached conclusions about (localized functions). (shrink)

The high number of Dengue Hemorrhagic Fever (DHF) cases from year to year and the endemic status of DHF in Kutaraja District, Banda Aceh City encourages us to always make efforts to reduce the morbidity rate of DHF. The involvement of elementary school teachers is very important to participate in DHF control which will teach their students. This study was conducted to assess the effect of before and after administration of the DHF learning module on the average knowledge score of (...) 90 grade IV and V elementary school students in the Kutaraja District, Banda Aceh City. The quasi-experimental method and Focus Group Discussions involving schools and Puskesmas when designing DHF learning modules were conducted. One-group pretest-posttest design, consisting of 25 questions that were analyzed using the Wilcoxon Signed Ranks Test. The study results obtained an average pre-test score of 76.6% and a post-test average value of 90.6%. The DHF learning module was able to increase elementary school students' knowledge. The provision of DHF material by elementary school teachers through modules can be done to students to increase students' knowledge so that they can participate in reducing the incidence of dengue hemorrhagic fever. (shrink)

This paper presents and discusses design studio outcomes developed in response to a studio brief linked to the Fun Palace Futures initiative of the Royal British Institute of British Architects (RIBA) in honour of architect Cedric Price and artist Joan Littlewood. The studio brief was collaboratively developed by the authors. Its core question was: How could the thoughts that guided the development and design of the Fun Palace – a project that was never built but is still today (...) cited as a model for thinking flexible and open architecture – be re-interpreted and renewed for the future? This line of thinking guided the initial and experimental research phase, during which students developed an understanding of what indeterminacy is or could be. The paper shows that through the translation of some of the essential principles of the Fun Palace project into pedagogical instruments, students were enabled to approach the questions of indeterminacy in an open and innovative manner. The paper argues that the use of a variety of media, which often went far beyond the conventional architectural pallet, and the introduction of media shifts were crucial in assisting the students in developing their own tools for creating a new kind of open and flexible architecture. The paper presents this pedagogic approach. We show that the conditions of indeterminacy, uncertainty, chance and change, hold potential for framing the design and creation of a new kind of dynamic architecture, and for initiating experimental architectural thinking in a design studio setting. (shrink)

This study primarily assessed students' achievement in mathematics using a mobile educational application to help them learn and adapt to changes in education. The study involved selected Grade 9 students at a public high school in Nueva Vizcaya, Philippines. This study used a quasi-experimental method, particularly a post-test control group design. Descriptive statistics such as frequencies, percent, mean, and standard deviation were used to describe the achievement of the students in mathematics. A t-test for independent samples was also (...) computed to determine if there is a significant difference between the students’ achievement in mathematics after using the mobile educational application by the control and experimental groups. Results revealed that students' achievement in mathematics was very proficient after using the application. Moreover, the usage of educational mobile applications has a better impact on students' achievement in mathematics than the traditional approach to teaching. Teachers are encouraged to place priority on solving problems. Overall, the use of the mobile educational application can enhance learning in mathematics, thus the continued use of the said application is advised. (shrink)

During the idea generation phase of the design process, designers often search for inspirations in external sources of information, such as photographs, written descriptions and physical examples. These sources have potential to enhance creative performance. However, they sometimes become too attached to particular ideas of external precedents or various examples. It refers to fixation which is identified as inadequate adoption of features from existing examples. Influence of the existing examples on creativity and fixation, specifically textual examples, have been discussed (...) in this research. -/- For the nature of design, researchers highlighted the restructuring process of design problem by new sources because the capabilities and boundaries of design problems are not defined very well. Further, the design problem is not knowable at any specific point. Design knowledge identifies itself by its ambiguity. Many models have been developed for design process. The various numbers of divided phases of the models can be seen as having two main areas: (1) idea generation phase (or “ideation”); (2) later phase for details. Idea generation plays an important role in the design process. It is the area of new and creative configurations on design. -/- Creativity is an integral part of the design process. Designers purpose to achieve original ideas to demonstrate their ability and unique designs. External stimuli or inspirational inputs play important roles to increase creativity. They can support moments of stimulation. Associations between information from memory and external stimuli can contribute to the creation of new meanings. Designers are widely influenced by their surroundings in daily lives. However, each stimulus may not be the part of a more creative result Even if designers want to utilize stimulus as an inspirational source, somehow it may fixate their mind to its surface features and they may lose potential creative contributions of the source. It is called fixation. There is much research that shows significant evidence of conformity effects across the design problems. -/- The given examples to designers may cause higher-level fixation and lower-level creativity or vice versa. Fixation may occur when example solutions are introduced, on the other hand, the designers may create more original ideas as well. There is a need for research to find ways to avoid fixation traps or reduce their adverse impact. Thus, this research focuses on variables of the given example. -/- The following claims show some research areas remained unclear: (1) Some researchers investigated textual examples as - one of the modalities of representation - but did not focus on forms of textual examples. (2) Much research has been conducted with examples which are selected by the researcher. Nevertheless, designers can also choose or produce their own stimuli. There is not much research on this possibility. In this context, my research focuses on the following two variables through two studies (Study 1 and 2): (1) forms of textual examples; (2) self-construction of textual examples. First, most of the studies in the literature have focused on visual presentation and there is not enough research on the content and form of the text. The study of textual examples has still not been awarded enough attention especially as various forms of text. Some forms of text are as follows: keyword, paragraph, sentence, poem. These observations lead me to the following research question: Which forms of textual example increase creativity and reduce fixation more? (Study 1). -/- Second, most of the studies regarding textual examples have used prose or keywords. The poems have been ignored. However, poems imply more meaning with fewer words. The structure of the poems enables more creative narratives than structure of prose. Because unusual organization of words stimulates the readers and draws their attention. This activates the creative performance of the reader. The surrealist poem is the extreme form of this activation. It is random assemblies with headlines and sentences which is cut from newspapers. Thus, novel meaning networks are formed. The method of creating a surrealist poem offers a new way of getting inspiration. It is termed as self-construction practice by this research. Through this method, designers create their own example from the given one. Reconstruction of the text may increase the creative process and prevent fixations from the given text. This suggestion led me to the following research question: If the designers write their own poem instead of a given poem (as a self-construction practice), can they internalize the textual example? In addition, does it produce more creative and less fixated designs? (Study 2). Two experimental studies were planned to partially answer the research questions, in which novice students of architecture were asked to solve two different design problems, under different conditions. All of the experimental sessions were conducted in a design education studio. The participants produced sketches and added a written explanation relating to their designs. Fluency, flexibility and repetition of key attributes were calculated by the researcher. -/- Originality, practicality, understanding of the task and quality were ranked by judges. Study 1 shows us tendencies of using various textual forms. Distinctions of keywords and of poems have appeared among them. This emphasizes the role of keyword and poem in the design process as inspirational sources and provides many tips for their potential use. The keyword also leads to a high degree of fixation. However, a low degree of fixation is observed when poems are presented as inspirational examples. -/- In Study 2, the self-constructed poem seems to support develop more successful design ideas from many perspectives. In the context of the surrealist poem, writing and reading the surrealist poem trigger the designers’ imagination. At first, the words and lines of poems seem unrelated to each other and designers try to relate them and solve the puzzle of meaning. Hence, novel meaning networks are formed. It indicates that surrealist poems are able to activate the creative performance of the designers. Writing their own surrealist poems ,as a self-construction practice, motivated designers to begin to produce by having fun. Motivated designers have stimulated themselves to produce creative ideas. In other words, the self-construction process may be added to the design process models in the earlier part of the idea generation phase which is called as pre-design and warm-up phase. This earlier phase makes designers highly motivated and they internalized the given examples. -/- Following the conclusions, several implications and recommendations for the design process and education are discussed. (shrink)

Prof. Miščević has long been an ardent defender of the use of thought experiments in philosophy, foremost metaphysics, epistemology and philosophy of mind. Recently he has, in his typically sophisticated manner, extended his general account of philosophical thought-experimenting to the domain of normative politics. Not only can the history of political philosophy be better understood and appreciated, according to Miščević, when seen as a more or less continuous, yet covert, practice of thought-experimenting, the very progress of the discipline may crucially (...) depend on finding the right balance between the constraints of (biological, psychological, economic, political, and so on) reality and political-moral ideals when we set to design our basic political notions and institutions. I have much less confidence in this project than prof. Miščević does. As a subspecies of moral TE, political TE share all their problems plus exhibit some of their own. In the paper, I present and discuss two types of evidence that threaten to undermine political philosophers’ trust in thought-experiments and the ethical/political intuitions elicited by them: (i) the dismal past record of thought-experimentation in moral and political philosophy; and (ii) the variety, prevalence, and stubbornness, of bias in ordinary social/political judgment. (shrink)

The scientific status of evolutionary theory seems to be more or less perennially under question. I am not referring here (just) to the silliness of young Earth creation- ism (Pigliucci 2002; Boudry and Braeckman 2010), or even of the barely more intel- lectually sophisticated so-called Intelligent Design theory (Recker 2010; Brigandt this volume), but rather to discussions among scientists and philosophers of science concerning the epistemic status of evolutionary theory (Sober 2010). As we shall see in what follows, this (...) debate has a long history, dating all the way back to Darwin, and it is in great part rooted in the fundamental dichotomy between what French biologist and Nobel laureate Jacques Monod (1971) called chance and necessity—i.e., the inevitable and inextricable interplay of deterministic and stochastic mechanisms operating during the course of evolution. (shrink)

Behavioral genetic (BG) research has yielded many important discoveries about the origins of human behavior, but offers little insight into how we might improve outcomes. We posit that this gap in our knowledge base stems in part from the epidemiologic nature of BG research questions. Namely, BG studies focus on understanding etiology as it currently exists, rather than etiology in environments that could exist but do not as of yet (e.g., etiology following an intervention). Put another way, they focus exclusively (...) on the etiology of “what is” rather than “what could be”. The current paper discusses various aspects of this field-wide methodological reality, and offers a way to overcome it by demonstrating how behavioral geneticists can incorporate an experimental approach into their work. We outline an ongoing study that embeds a randomized intervention within a twin design, connecting “what is” and “what could be” for the first time. We then lay out a more general framework for a new field—experimental BGs—which has the potential to advance both scientific inquiry and related philosophical discussions. (shrink)

This paper surveys historical and recent philosophical discussions of the relations between imagination and creativity. In the first two sections, it covers two insufficiently studied analyses of the creative imagination, that of Kant and Sartre, respectively. The next section discusses imagination and its role in scientific discovery, with particular emphasis on the writings of Michael Polanyi, and on thought experiments and experimental design. The final section offers a brief discussion of some very recent work done on conceptual relations (...) between imagination and creativity. (shrink)

Studies on mind-wandering frequently use reading as an experimental task. In these studies, reading is conceived as a cognitive process that potentially offers a contrast to mind-wandering, because it seems to be task-related, goal-directed and stimulus-dependent. More recent work attempts to avoid the dichotomy of successful cognitive processes and processes of mind-wandering found in earlier studies. We approach the issue from the perspective that texts provoke modes of cognitive involvement different from the information processing and recall account that underlies (...) many early mind-wandering studies. After all, reading itself is an umbrella term for activities that are characterized by a variety of phenomenological and functional signatures. We conceptualize reading and mind-wandering in relation to each other through the framework of enculturated predictive processing, which is informed by research in literary studies. Earlier accounts think of reading predominantly in terms of the construction of situation models that organize textual information. By contrast, enculturated predictive processing foregrounds shifting stances readers can take in relation to the text. Characters featuring in literary texts might be mind-wandering themselves, or passages in literary style might make the construction of a clearly defined situational model impossible. Furthermore, we take into account that texts often elicit mind-wandering through the construction of task-relevant and attention-driven virtual scenarios in readers' minds. This more complex account of reading can enrich recent attempts to understand mind-wandering as a complex, multi-dimensional phenomenon. The study of mind-wandering can benefit, we argue, from a closer attention to the process of reading and to the texts it deploys as stimuli. The emerging perspective from enculturated predictive processing and literary studies makes distinctions in reading that in turn enable research on mind-wandering to ask more precise questions about (1) different kinds of mind-wandering, (2) different modes of reading, and (3) how and where they interconnect across time. (shrink)

The relative contributions of gender, test anxiety and test items scrambling on performance in Mathematics has been widely assessed, although there is an inconclusive argument regarding the magnitude of such effects. This study was designed to contribute to this debate, while also being the first study to evaluate the interactive effects of the three dimensions of test anxiety (worry, emotion and total) on performance in Mathematics. A systematic random sample of 1,358 SS3 students participated in a quasi-experiment. Data were obtained (...) using the Test Anxiety Scale (TAI) (Spielberger, 1980) and a Mathematics Achievement Test (MAT) developed by Etuk (2019). Findings indicated that there was no significant gender difference on performance; tests anxiety and items scrambling had significant effects on performance in Mathematics respectively; low students' performance in Mathematics was associated with high test anxiety and test items arrangement from complex to simple; there was a significant interaction of test anxiety worry, emotion and total on performance in Mathematics. It was concluded that gender does not play a significant role in the performance of students in mathematics. Test anxiety in terms of worry, emotion and total affect the performance of students in Mathematics. Based on the conclusions, relevant implications are discussed. (shrink)

Com base na crítica que Hume faz ao argumento do desígnio, especialmente nas partes 10 e 11 dos Diálogos sobre a Religião Natural, meu objetivo neste artigo é, a partir de uma análise da relação entre a existência do mal no mundo e a suposta existência de uma divindade possuidora dos atributos tradicionais do teísmo, defender a tese segundo a qual o tratamento que Hume dá ao problema do mal corresponde, digamos assim, à cartada final – o último e decisivo (...) recurso que Philo personagem que articula essa crítica) aciona para mostrar que o argumento do desígnio não fornece bases suficientemente sólidas e consistentes para dar suporte à crença na existência de um Deus maximamente poderoso, justo e benevolente; e que, portanto, a existência do mal no mundo tem uma força argumentativa tal que a improbabilidade da existência de Deus é maior do que com base nos argumentos apresentados nas partes 2 a 8 dos Diálogos. Isso significa que eu tomo aqui o problema do mal como o maior problema para o teísta experimental – cuja argumentação pretende provar a existência de Deus a partir da observação dos fenômenos do mundo. (shrink)

This paper defends a challenge, inspired by arguments drawn from contemporary ordinary language philosophy and grounded in experimental data, to certain forms of standard philosophical practice. The challenge is inspired by contemporary philosophers who describe themselves as practicing “ordinary language philosophy”. Contemporary ordinary language philosophy can be divided into constructive and critical approaches. The critical approach to contemporary ordinary language philosophy has been forcefully developed by Avner Baz, who attempts to show that a substantial chunk of contemporary philosophy is (...) fundamentally misguided. I describe Baz’s project and argue that while there is reason to be skeptical of its radical conclusion, it conveys an important truth about discontinuities between ordinary uses of philosophically significant expressions (“know”, e.g.) and their use in philosophical thought experiments. I discuss some evidence from experimental psychology and behavioral economics indicating that there is a risk of overlooking important aspects of meaning or misinterpreting experimental results by focusing only on abstract experimental scenarios, rather than employing more diverse and more ecologically valid experimental designs. I conclude by presenting a revised version of the critical argument from ordinary language. (shrink)

According to contextualism, vast majority of natural-language expressions are context-sensitive. When testing whether this claim is reflected in Folk intuitions, some interesting methodological questions were raised such as: which experimental design is more appropriate for testing contextualism – the within- or the between-subject design? The main thesis of this paper is that the between-subject design should be preferred. The first experiment aims at assessing the difference between the results obtained for within-subjects measurements (where all participants assess (...) all contexts) and between-subject measurements (where respondents evaluating different contexts are distinct groups). It is shown that the within-subject design provides data that seems to support contextualism. However, I present an alternative, invariantist interpretation of these results, therefore showing that the within-subject design does not allow to empirically distinguish between contextualism and invariantism. The second experiment further elaborates the issue of how perceiving the contrast between contexts can affect subjects’ judgments – I show that certain kinds of contexts may elicit opposite intuitions when contrasted with different contexts. (shrink)

Some experiments in perceptual psychology measure perceivers’ phenomenal experiences of objects versus their cognitive assessments of object properties. Analyzing such experiments, this article responds to Pizlo’s claim that much work on shape constancy before 1985 confused problems of shape ambiguity with problems of shape constancy. Pizlo fails to grasp the logic of experimental designs directed toward phenomenal aspects of shape constancy. In the domain of size perception, Granrud’s studies of size constancy in children and adults distinguish phenomenal from cognitive (...) factors. (shrink)

Keith DeRose has argued that context shifting experiments should be designed in a specific way in order to accommodate what he calls a ‘truth/falsity asymmetry’. I explain and critique DeRose's reasons for proposing this modification to contextualist methodology, drawing on recent experimental studies of DeRose's bank cases as well as experimental findings about the verification of affirmative and negative statements. While DeRose's arguments for his particular modification to contextualist methodology fail, the lesson of his proposal is that there (...) is good reason to pay close attention to several subtle aspects of the design of context shifting experiments. (shrink)

Combining inquiry and metacognition helps strengthen mathematical learning. This study examines how metacognitive mathematical inquiry can be modeled using reflective tasking approach. Quasi-experimental design was employed in two comparable groups of Grade 9 students of Ibarra National High School, Maasin City, Philippines during the academic year 2021-2022. Lesson guides on reflective task assessments anchored on metacognitive and inquiry-based learning theories, inquiry rubric scales and modified state metacognitive inventory served as data collection instruments. Results of t-test analysis revealed significant (...) difference in performance between groups implying high efficacy of the methodology in stimulating students’ metacognitive inquiry skill. Correlation values projected significant relationship between reflective learning performances with metacognition. Quantitative evidences, thus, lead to conclusion that reflective tasking methodology exemplifies potential in metacognitive mathematical inquiry as it optimizes their thinking processes, task involvement, and regulation through self-reflection principles worthy of practice throughout lifelong learning. (shrink)

Good physical experiments conform to the basic methodological standards of experimental design: they are objective, reliable, and valid. But is this also true of thought experiments? Especially problems of personal identity have engendered hypothetical scenarios that are very distant from the actual world. These imagined situations have been conspicuously ineffective at resolving conflicting intuitions and deciding between the different accounts of personal identity. Using prominent examples from the literature, I argue that this is due to many of these (...) thought experiments not adhering to the methodological standards that guide experimental design in nearly all other disciplines. I also show how empirically unwarranted background assumptions about human physiology render some of the hypothetical scenarios that are employed in the debate about personal identity highly misleading. (shrink)

In his 1935 book Principles of Gestalt Psychology, Kurt Koffka stated that empirical research in perceptual psychology should begin with “a phenomenological analysis,” which in turn would put constraints on the “true theory.” In this paper, I take this statement as a point of departure to investigate in what sense Gestalt psychologists practiced a phenomenological analysis and how they saw it related to theory construction. I will contextualize the perceptual research in Gestalt psychology vis-a-vis Husserlian phenomenology on the one hand (...) and mainstream psychophysics on the other, and I will argue that Gestalt psychologists practiced a form of “frontloading” phenomenology: Instead of requiring experimental subjects to engage in experiential reflections, such reflections were—in a sense—already engrained in the experimental designs used by researchers. This type of phenomenology was decidedly anti-“introspectionist” and as such was compatible with some of Husserl’s basic commitments, while at the same time bearing a surprising resemblance with the methods employed by psychophysicists like E. Boring and S.S. Stevens. This latter point will prompt me to explore what the difference between Gestalt-psychology and psychophysics amounted to. My analysis will reveal some disagreements and misunderstandings, especially with regard to the notions of isomorphism and introspection. (shrink)

This paper aims to address the difficulties of high school students in bridging their computational understanding with their visualization skills in understanding the notion of the limits in their calculus class. This research used a pre-experimental one-group pretest-posttest design research on 62 grade 10 students enrolled in the Science, Technology, and Engineering Program (STEP) in one of the public high schools in Zamboanga del Sur, Philippines. A series of remedial sessions were given to help them understand the function (...) values, one-sided limits, limits of a function, and its discontinuities with the aid of the GeoGebra. Results revealed that there is a significant improvement in their mathematics performance before and after the remediation, t(61) = -19.99, p<.05. The real-time feedback provided by the drawing interface of GeoGebra has provided the students the insights into how objects behave in geometrical space, bridging their understanding in locating the values shown by the computational algebraic processes. Additionally, the significant difference in the achievement reveals a large effect size (Cohen’s =2.54) which could be accounted for by the remediation using interactive activities in the GeoGebra. (shrink)

Consciousness and confidence seem intimately related. Accordingly, some researchers use confidence ratings as a measure of, or proxy for, consciousness. Rosenthal discusses the potential connections between the two, and rejects confidence as a valid measure of consciousness. He argues that there are better alternatives to get at conscious experiences such as direct subjective reports of awareness (i.e. subjects’ reports of perceiving something or of the degree of visibility of a stimulus). In this chapter, we offer a different perspective. Confidence ratings (...) in general, and metacognitive measures in particular, may offer important advantages over subjective ratings. The arguments we offer here are supported by empirical, practical and socio-strategic considerations. However, we do not suggest consciousness and confidence are interchangeable. We recognize the limitations of confidence ratings in some experimental designs and for some research questions. Nevertheless, we also address a potential conceptual link between consciousness and confidence that stems from Rosenthal’s very own work on mental quality space theory. (shrink)

In the past few years there has been a turn towards evaluating the empirical foundation of epistemic contextualism using formal (rather than armchair) experimental methods. By-and-large, the results of these experiments have not supported the original motivation for epistemic contextualism. That is partly because experiments have only uncovered effects of changing context on knowledge ascriptions in limited experimental circumstances (when contrast is present, for example), and partly because existing experiments have not been designed to distinguish between contextualism and (...) one of its main competing theories, subject-sensitive invariantism. In this paper, we discuss how a particular, "third-person", experimental design is needed to provide evidence that would support contextualism over subject-sensitive invariantism. In spite of the theoretical significance of third-person knowledge ascriptions for debates surrounding contextualism, no formal experiments evaluating such ascriptions that assess contextualist claims have previously been conducted. In this paper, we conduct an experiment specifically designed to examine that central gap in contextualism’s empirical foundation. The results of our experiment provide crucial support for epistemic contextualism over subject-sensitive invariantism. (shrink)

The movement called Experimental Philosophy (‘x-Phi’) has now passed its tenth anniversary. Its central insight is compelling: When an argument hinges on accepting certain ‘facts’ about human perception, knowledge, or judging, the evoking of relevant intuitions by thought experiments is intended to make those facts seem obvious. But these intuitions may not be shared universally. Experimentalists propose testing claims that traditionally were intuition-based using real experiments, with real samples. Demanding that empirical claims be empirically supported is certainly reasonable; though (...) experiments are not necessarily the only means available. When experiments are conducted, adequately interpreting their results requires understanding the study’s design (and possibly flaws) that produced them. Experiment-based reports should document the design clearly. If Plato, writing his Meno, replaced accounts of Socrates demonstrating geometry to a slave-boy, with a survey of 100 real boys—some grasping his demonstrations, others not—what conclusions could be reached? Before answering, the reader needs details on key design questions, including (among others): (a) What population are these samples intended to represent? (E.g., ‘all slave boys’?; ‘math-ignorant people’?; ‘everyone’?) (b) What statistical tests were conducted, on what assumptions? (c) How was ‘significance’ of results determined? (d) Was the test instrument’s validity established? For readers wishing to explore x-Phi’s potentials, as contributors or as interpreters of their findings, this paper offers some cautionary considerations. Throughout their literature, examples can be found casting doubt on some experimentalists’ findings, due to design-related issues. Increased awareness of methodological questions would tighten the x-phi literature, going forward . (shrink)

Understanding the folk notion of free will and moral responsibility is important for a host of applied and theoretical issues in psychology, philosophy, and ethics. The bulk of experimental research has focused on folk intuitions concerning determinism's relation to free will and moral responsibility. However, determinism is a difficult term for many folk to understand. Accordingly researchers often use comprehension questions to identify and exclude large proportions of participants who seem to struggle with relevant concepts. Here, we document some (...) of the cognitive mechanisms involved in folk judgments related to comprehension of determinism, and its relations to free will and moral responsibility. Results provide prescriptions for experimental designs that can increase comprehension, potentially decreasing sampling biases. Theoretical and methodological implications are discussed. (shrink)

The study aimed to determine if differentiated instruction effectively addresses learning gaps in mathematics. In particular, it explored how it can improve the student’s learning gaps concerning mathematical performance and confidence. The study employed a quasi-experimental design with 30 purposively-selected Grade 10 participants divided into differentiated (n = 15) and control groups (n = 15), ensuring the utmost ethical measures. The mean and standard deviation were used to describe the participants’ performance and confidence. Independent samples t-tests were used (...) to determine the significant differences in the performance and confidence between the two groups. In contrast, dependent samples t-tests were used to determine the significant differences in each group’s pre and posttest performance and confidence. Findings bared that the differentiated instruction successfully addressed students’ performance in mathematics even in a short period. It also increased the participants’ confidence when answering fundamental problems. Continuing differentiated instruction activities are recommended since it benefits students who struggle in mathematics, particularly in answering fundamental operations. Differentiated teaching activities in mathematics can boost academic achievement and engagement and prepare students for future success while fostering a positive and inclusive classroom culture that values individual learning needs and preferences. (shrink)

Limitless is a movie (released in 2011) as well as a novel (published in 2001) about a tormented author who (plagued by a writer’s block) becomes an early user of an experimental designer drug. The wonder drug makes him highly productive overnight and even allows him to make a fortune on the stock market. At the height of his career, however, the detrimental side-effects become increasingly noticeable. In this article, Limitless is analysed from two perspectives. First of all, building (...) on the views of the French novelist Emile Zola, the novel is seen as the report of a closely monitored experiment. Subsequently, building on the phenomenology of Ludwig Binswanger, I will show how the cognitive enhancement drug not only boosts the protagonist’s information processing capacities, but also modifies his experience of space and time, his sense of spatiality, his way of being-in-the-world. On the basis of these (complementary) analyses I will indicate how genres of the imagination (such as movies and novels) may play a significant role in assessing the societal implications of emerging technological developments such as neuro-enhancement, especially during the preparatory or anticipatory stage. (shrink)

The present study aimed to develop effective moral educational interventions based on social psychology by using stories of moral exemplars. We tested whether motivation to engage in voluntary service as a form of moral behavior was better promoted by attainable and relevant exemplars or by unattainable and irrelevant exemplars. First, experiment 1, conducted in a lab, showed that stories of attainable exemplars more effectively promoted voluntary service activity engagement among undergraduate students compared with stories of unattainable exemplars and non-moral stories. (...) Second, experiment 2, a middle school classroom-level experiment with a quasi-experimental design, demonstrated that peer exemplars, who are perceived to be attainable and relevant to students, better promoted service engagement compared with historic figures in moral education classes. (shrink)

Odd and memorable examples are a distinctive feature of Charles Travis's work: cases involving squash balls, soot-covered kettles, walls that emit poison gas, faces turning puce, ties made of freshly cooked linguine, and people grunting when punched in the solar plexus all figure in his arguments. One of Travis's examples, involving a pair of situations in which the leaves of a Japanese maple tree are painted green, has even spawned its own literature consisting of attempts to explain the context sensitivity (...) of color adjectives ("green", e.g.). For Travis, these examples play a central role in his arguments for occasion-sensitivity, which he takes to be a pervasive feature of how we understand natural language. But how, exactly, do these examples work? My aims in this paper are to put Travis’s examples under the microscope, using recent experimental studies of Travis-style cases to raise worries about aspects of the way Travis's cases are informally presented, but then show how his examples can be redesigned to respond to these doubts. (shrink)

There is conflicting experimental evidence about whether the “stakes” or importance of being wrong affect judgments about whether a subject knows a proposition. To date, judgments about stakes effects on knowledge have been investigated using binary paradigms: responses to “low” stakes cases are compared with responses to “high stakes” cases. However, stakes or importance are not binary properties—they are scalar: whether a situation is “high” or “low” stakes is a matter of degree. So far, no experimental work has (...) investigated the scalar nature of stakes effects on knowledge: do stakes effects increase as the stakes get higher? Do stakes effects only appear once a certain threshold of stakes has been crossed? Does the effect plateau at a certain point? To address these questions, we conducted experiments that probe for the scalarity of stakes effects using several experimental approaches. We found evidence of scalar stakes effects using an “evidence seeking” experimental design, but no evidence of scalar effects using a traditional “evidence-fixed” experimental design. In addition, using the evidence-seeking design, we uncovered a large, but previously unnoticed framing effect on whether participants are skeptical about whether someone can know something, no matter how much evidence they have. The rate of skeptical responses and the rate at which participants were willing to attribute “lazy knowledge”—that someone can know something without having to check—were themselves subject to a stakes effect: participants were more skeptical when the stakes were higher, and more prone to attribute lazy knowledge when the stakes were lower. We argue that the novel skeptical stakes effect provides resources to respond to criticisms of the evidence-seeking approach that argue that it does not target knowledge. (shrink)

When does it make sense to act randomly? A persuasive argument from Bayesian decision theory legitimizes randomization essentially only in tie-breaking situations. Rational behaviour in humans, non-human animals, and artificial agents, however, often seems indeterminate, even random. Moreover, rationales for randomized acts have been offered in a number of disciplines, including game theory, experimental design, and machine learning. A common way of accommodating some of these observations is by appeal to a decision-maker’s bounded computational resources. Making this suggestion (...) both precise and compelling is surprisingly difficult. Toward this end, I propose two fundamental rationales for randomization, drawing upon diverse ideas and results from the wider theory of computation. The first unifies common intuitions in favour of randomization from the aforementioned disciplines. The second introduces a deep connection between randomization and memory: access to a randomizing device is provably helpful for an agent burdened with a finite memory. Aside from fit with ordinary intuitions about rational action, the two rationales also make sense of empirical observations in the biological world. Indeed, random behaviour emerges more or less where it should, according to the proposal. (shrink)

In recent years, a number of philosophers and cognitive scientists have advocated for an ‘interactive turn’ in the methodology of social-cognition research: to become more ecologically valid, we must design experiments that are interactive, rather than merely observational. While the practical aim of improving ecological validity in the study of social cognition is laudable, we think that the notion of ‘interaction’ is not suitable for this task: as it is currently deployed in the social cognition literature, this notion leads (...) to serious conceptual and methodological confusion. In this paper, we tackle this confusion on three fronts: 1) we revise the ‘interactionist’ definition of interaction; 2) we demonstrate a number of potential methodological confounds that arise in interactive experimental designs; and 3) we show that ersatz interactivity works just as well as the real thing. We conclude that the notion of ‘interaction’, as it is currently being deployed in this literature, obscures an accurate understanding of human social cognition. (shrink)

The need to understand statistics in conducting research is very important, especially when working on quantitative data. The significance level is a very important concept that needs to be fully understood, particularly in hypothesis testing. Collado (2015) found out that graduate students have a fair level of understanding of the concepts of significance level; thus she constructed an e-module on the said topic designed for use by graduate students. The e-module was used in conducting true experimental design particularly (...) a randomized pretest-posttest control group design with two classes of graduate Statistics to compare instructions with e-module and without e-module. The class with e-module was only given a brief discussion on the interventions, while the group with e-module was taught with pure lecture method. The students taught with e-module obtained relatively higher scores than the students taught without the e-module only in one cluster of the lesson. After controlling the initial differences in scores, there was no significant difference in the mean scores of graduate students who differ in sex and intervention revealing further that e-module can be a substitute for the lecture method. This implies that e -module could reinforce graduate students’ independent learning and could help them cope with the lessons missed in class. E-module can also be taught in combination with traditional methods to better improve the understanding of the level of significance. (shrink)

Colour relationalism holds that the colours are constituted by relations to subjects. Anti-relationalists have claimed that this view stands in stark contrast to our phenomenally-informed, pre-theoretic intuitions. Is this claim right? Cohen and Nichols’ recent empirical study suggests not, as about half of their participants seemed to be relationalists about colour. Despite Cohen and Nichols’ study, we think that the anti-relationalist’s claim is correct. We explain why there are good reasons to suspect that Cohen and Nichols’ experimental design (...) skewed their results in favour of relationalism. We then run an improved study and find that most of our participants seem to be anti-relationalists. We find some other interesting things too. Our results suggest that the majority of ordinary people find it no less intuitive that colours are objective than that shapes are objective. We also find some evidence that when those with little philosophical training are asked about the colours of objects, their intuitions about colour and shape cases are similar, but when asked about people’s colour ascriptions, their intuitions about colour and shape cases differ. (shrink)

Current debates surrounding the virtues and shortcomings of randomization are symptomatic of a lack of appreciation of the fact that causation can be inferred by two distinct inference methods, each requiring its own, specific experimental design. There is a non-statistical type of inference associated with controlled experiments in basic biomedical research; and a statistical variety associated with randomized controlled trials in clinical research. I argue that the main difference between the two hinges on the satisfaction of the comparability (...) requirement, which is in turn dictated by the nature of the objects of study, namely homogeneous or heterogeneous populations of biological systems. Among other things, this entails that the objection according to which randomized experiments fail to provide better evidence for causation because randomization cannot guarantee comparability is mistaken. (shrink)

Mathematics is considered one of the most challenging courses for many elementary pre-service teachers (EPTs). In hopes for improvement, teacher educators have been incorporating a jigsaw strategy to equip future teachers with the necessary competencies. Hence, the study aimed to determine the effectiveness of the jigsaw strategy with EPTs’ level of mathematics achievement and interest in an online cooperative learning environment. The research utilized a pre-experimental design with 40 participants. The researchers used pretest and posttest questions covering fraction (...) operations and a mathematics interest questionnaire before and after the intervention. With the implementation of the jigsaw strategy, results showed that the EPTs’ mathematics achievement improved while their interest in mathematics improved to some extent. Likewise, a significant difference between the pre-and post-intervention concerning the EPTs’ mathematics achievement and interest in mathematics was found. Furthermore, correlation analysis revealed that study time is negatively related to mathematics achievement, as is the overall level of interest in mathematics. These findings imply that a jigsaw strategy is a useful tool in teaching mathematics online. However, several modifications may be considered to recognize that the EPTs’ interest in mathematics varies from one person to another. Teacher education institutions are encouraged to apply this strategy not only for EPTs to increase their mathematical know-hows but also to serve as an example for them to employ in their future teaching careers. (shrink)