This paper puts forward a general framework for thought about human information processing. It is intended to avoid some of the problems of pipeline or stage models of function. At the same time it avoids the snare of supposing a welter of indefinitely many separate processes. The approach is not particularly original, but rather represents the common elements or presuppositions in a number of modern theories. These presuppositions are not usually explicit, however, and making them so reduces the danger of (...) slipping back into earlier modes of thought.The key point is to distinguish between persisting representations and the processes that translate one representation into another. Various classes or groups of persisting representations can be distinguished by the experimental treatments that interfere with them. In particular, there now seem to be several kinds of short-term or temporary storage, different from each other as well as from longterm memory; the translating processes also have several different modes or kinds. A particularly important aspect of the current position is that a model of this general type no longer requires some external agent to direct and control long sequences of behaviour. (shrink)

The traditional view of symbol grounding seeks to connect an a priori internal representation or ‘form’ to its external referent. But such a ‘form’ is usually itself systematically composed out of more primitive parts, so this view ignores its grounding in the physics of the world. Some previous work simulating multiple talking/listening agents has effectively taken this stance, and shown how a shared discrete speech code can emerge. Taking the earlier work of Oudeyer, we have extended his model to include (...) a dispersive force intended to account broadly for a speaker’s motivation to increase auditory distinctiveness. New simulations show that vowel systems result that are more representative of the range seen in human languages. These simulations make many profound abstractions and assumptions. Relaxing these by including more physically and physiologically realistic mechanisms for talking and listening is seen as the key to replicating more complex and dynamic aspects of speech, such as consonant-vowel patterning. (shrink)

Mirror neurons fire both when a primate executes a transitive action directed toward a target (e.g., grasping) and when he observes the same action performed by another. According to the prevalent interpretation, action-mirroring is a process of interpersonal neural similarity whereby an observer maps the agent's perceived movements onto her own motor repertoire. Furthermore, ever since Gallese and Goldman's (1998) influential paper, action-mirroring has been linked to third-person mindreading on the grounds that it enables an observer to represent the agent's (...) intention. In this paper, I criticize the prevalent interpretation on two grounds. First, action-mirroring could not result in interpersonal neural similarity unless there was a single mechanism active at different times in a single brain during the execution and the perception of acts of grasping. Second, such a neural mechanism is better conceived as underlying the possession of the concept of grasping than as a basis for mindreading. (shrink)

The superlative quantifiers, at least and at most, are commonly assumed to have the same truth-conditions as the comparative quantifiers more than and fewer than. However, as Geurts & Nouwen have demonstrated, this is wrong, and several theories have been proposed to account for them. In this paper we propose that superlative quantifiers are illocutionary operators; specifically, they modify meta-speech acts.Meta speech-acts are operators that do not express a speech act, but a willingness to make or refrain from making a (...) certain speech act. The classic example is speech act denegation, e.g. I don't promise to come, where the speaker is explicitly refraining from performing the speech act of promising What denegations do is to delimit the future development of conversation, that is, they delimit future admissible speech acts. Hence we call them meta-speech acts. They are not moves in a game, but rather commitments to behave in certain ways in the future. We formalize the notion of meta speech acts as commitment development spaces, which are rooted graphs: The root of the graph describes the commitment development up to the current point in conversation; the continuations from the root describe the admissible future directions.We define and formalize the meta-speech act GRANT, which indicates that the speaker, while not necessarily subscribing to a proposition, refrains from asserting its negation. We propose that superlative quantifiers are quantifiers over GRANTs. Thus, Mary petted at least three rabbits means that the minimal number n such that the speaker GRANTs that Mary petted n rabbits is n = 3. In other words, the speaker denies that Mary petted two, one, or no rabbits, but GRANTs that she petted more.We formalize this interpretation of superlative quantifiers in terms of commitment development spaces, and show how the truth conditions that are derived from it are partly entailed and partly conversationally implicated. We demonstrates how the theory accounts for a wide variety of phenomena regarding the interpretation of superlative quantifiers, their distribution, and the contexts in which they can be embedded. (shrink)

Autor razmatra i kritizira dva argumenta iz višesmislice: S. Pinkerov argument iz višesmislice za hipotezu takozvanoga ‘jezika misli’ i argument iz višesmislice protiv davidsonovske ‘semantike istinosnih uvjeta’ što ga je predložila K. P. Parsons. Oslanjajući se uglavnom na G. Harmana i D. Davidsona, on nastoji pokazati da Pinker/Parsons argumenti dijele jednu zajedničku strategiju i također impliciraju i/ilisugeriraju jedan, po njegovu sudu neprihvatljiv, pojam višesmislice. Raspravljajući o Pinkerovu argumentu, on nastoji objasniti na koji su način razlike u tumačenju višesmislice reflektirane u (...) promjenama javnih i svima dostupnih aspekata uporabe jezika. U diskusiji pak o argumentu protiv ‘semantike istinosnih uvjeta’ on, contra Parsons,nastoji objasniti u kojem je smislu moguće govoriti o istinosnim uvjetima za višesmislice, a da to ne znači prijetnju Davidsonovom pristupu teoriji značenja. Autor, na koncu, brani teoriju višesmislice kao jednoga vida neznanja/neodlučivosti i tvrdi da ta teorija predstavlja i plauzibilniju i realističniju teorijsku opciju od one nakojoj su Pinker i Parsons temeljili svoje argumente, a koju nalazimo i kod Aristotela , K. Bacha ili W. Lycana.The author explores and criticises two arguments from ambiguity: S.Pinker’s argument from ambiguity in support of the ‘Language of Thought’ hypothesis, and the argument from ambiguity proposed by K. P. Parsons against Davidsonian ‘semantics of truth-conditions’. Leaning primarily on G. Harman and D. Davidson he aims to demonstrate that the Pinker/Parsons arguments share a common strategy, on the one hand, and imply and/or suggest, as he claims, an implausible view of ambiguity, on the other. Discussing Pinker’s argument he further attempts to elucidate the ways in which the modifications of public and inter-subjectively accessible aspectsof the use of language reflect the differences in interpretations of an ambiguity. His exploration of the argument against ‘semantics of truth-conditions’ then aims to explain, contra Parsons, the sense in which talk about the truth conditions for ambiguity does not implicate a threat to Davidson’s perspective on the theory of meaning. Finally, the author argues for the view of ambiguity as a kind of ignorance/undecidability that, as he contends, represents both more realistic and more plausible theoretical option than the one on which both Pinker and Parsons found their arguments and which also comes out in Aristotle , K. Bach and W. Lycan. (shrink)

Language, through the discrete nature of linguistic names and strictly determined grammatical rules, creates absolute, “quantized”, sharply separated “facts” within the external world that is continuous, “fuzzy” and relational in its essence. Therefore, it is similar, in some important sense, to magic, which attributes causal and creative power to magical words and formulas. On the one hand, language increases greatly the effectiveness of the processes of thinking and interpersonal communication, yet, on the other hand, it determines and distorts to a (...) large extent the picture of the world created within the mind. The relatively smallest (but still significant) magical admixture is present in science, because of its relatively reliable methodology, while the largest is found in religion and a large part of philosophy. The magical nature of language also manifests itself in logic and mathematics that refer to ill determined, fuzzy objects, sets and relations in the real world. The meaning of linguistic names is based on the conceptual network—an epiphenomenon (continuous in its essence) of the neural network—where interactions between particular concepts are based on the relation of connotation. The names and formulas of language correspond to these concepts which are best separated and determined. A direct relation of denotation between the elements of language and “facts” of the world is an illusion. While we cannot dispense with language because of its immense usefulness, we must remember about its “fact-creating” nature and influence on our thought and cognitive processes. The picture of the reality created as the result of them is to a large extent formed and deformed by the nature of language, and not by the “immanent” properties of the world in itself. (shrink)

A fundamental problem in spoken language is the duality between the continuous aspects of phonetic performance and the discrete aspects of phonological competence. We study 2 instances of this problem from the phenomenon of voicing neutralization and vowel harmony. In each case, we present a model where the experimentally observed continuous distinctions are linked to the discreteness of phonological form using the mathematics of nonlinear dynamics.

What constitutes our human capacity to engage and be in the same frame of mind as another human? How do we come to share a sense of what ‘looks good’ and what ‘makes sense’? How do we handle differences and come to coexist with them? How do we come to feel that we understand what someone else is experiencing? How are we able to walk in silence with someone familiar and be sharing a peaceful space? All of these aspects are (...) part of human ‘interaction’. In designing interactive technologies designers have endeavoured to explicate, analyse and simulate, our capacity for social adaptation. Their motivations are mixed and include the desires to improve efficiency, improve consumption, to connect people, to make it easier for people to work together, to improve education and learning. In these endeavours to explicate, analyse and simulate, there is a fundamental human capacity that is beyond technology and that facilitates these aspects of being, feeling and thinking with others. That capacity, we suggest, is human entrainment. This is our ability to coordinate the timing of our behaviours and rhythmically synchronise our attentional resources. Expressed within the movements of our bodies and voices, it has a quality that is akin to music. In this paper, disparate domains of research such as pragmatics, social psychology, behaviourism, cognitive science, computational linguistics, gesture, are brought together, and considered in light of the developments in interactive technology, in order to shape a conceptual framework for understanding entrainment in everyday human interaction. (shrink)

Artificial Intelligence, and the cognitivist view of mind on which it is based, represent the last stage of the rationalist tradition in philosophy. This tradition begins when Socrates assumes that intelligence is based on principles and when Plato adds the requirement that these principles must be strict rules, not based on taken-for-granted background understanding. This philosophical position, refined by Hobbes, Descartes and Leibniz, is finally converted into a research program by Herbert Simon and Allen Newell. That research program is now (...) in trouble, so we must return to its source and question Socrates' assumption that intelligence consists in solving problems by following rules, and that one acquires the necessary rules by abstracting them from specific cases. A phenomenological description of skill acquisition suggests that the acquisition of expertise moves in just the opposite direction: from abstract rules to particular cases. This description of expertise accounts for the difficulties that have confronted AI for the last decade. (shrink)

Early agreement within cognitive science on the topic of representation has now given way to a combination of positions. Some question the significance of representation in cognition. Others continue to argue in favor, but the case has not been demonstrated in any formal way. The present paper sets out a framework in which the value of representation use can be mathematically measured, albeit in a broadly sensory context rather than a specifically cognitive one. Key to the approach is the use (...) of Bayesian networks for modeling the distal dimension of sensory processes. More relevant to cognitive science is the theoretical result obtained, which is that a certain type of representational architecture is necessary for achievement of sensory efficiency. While exhibiting few of the characteristics of traditional, symbolic encoding, this architecture corresponds quite closely to the forms of embedded representation now being explored in some embedded/embodied approaches. It becomes meaningful to view that type of representation use as a form of information recovery. A formal basis then exists for viewing representation not so much as the substrate of reasoning and thought, but rather as a general medium for efficient, interpretive processing. (shrink)

The nature of perceptual demonstratives, the ‘that F’ component of judgments of the form ‘that F is G’ based on perceptual input, has been a topic of interest for many philosophers. Another related, though distinct, question concerns the nature of demonstrative judgments based not on current perceptual input, but instead derived from memory. I argue that the account put forward by John Campbell fails to adequately account for memory-based demonstrative thought.

This thesis evaluates a variety of important modern approaches to the study of the mind/brain in the light of recent developments in the debate about how evidence should be used to support a theory and its constituent hypotheses. Although all these approaches are ostensibly based upon the principles of scientific realism, this evaluation will demonstrate that all of them fall well short of these requirements. Consequently, the more modern, co-evolutionary theories of the mind/brain do not constitute the significant advance upon (...) more traditional theories that their authors take them to be. There are two fundamental elements within my discussion of the relationship between evidence and the constituent hypotheses of a theory. Firstly, I shall demonstrate that the traditional veil-of-perception issue has a wider relevance than that which has historically been attributed to it, since it is the paradigm case of an attempt to construct a two level theory on the basis of evidence tha~ does not adequately support either hypothesis. This interpretation of the issue can be represented by constructing a semantically inconsistent tetrad. It is shown that similar tetrads can be constructed for each of the theories of the mind/brain discussed in this thesis. Secondly, I shall argue that the theories discussed all employ a variety of the bootstrap strategy. This strategy is a relatively recent development in the philosophy of science, which suggests a way in which the same evidence can be used to generate both a general and a specific hypothesis within a theory without violating the constraints of scientific realism. However, I contend that recent use of this strategy in the investigation of mind is largely unsatisfactory as a result of a neglect of structural as well as more informal influences upon the kinds of evidence employed to support the hypotheses contained in the theories. The thesis is divided into three major sections. The first (Section A) discusses the influence of the motivations of the individual theorists upon their arguments and provides a critical discussion of the issues of the veil-of-perception and bootstrapping. The second section (Section B) comprises a detailed examination of a range of modern theories of the mind/brain and critically analyses their success. The final section (Section C) draws together general conclusions and methodological consequences of the detailed analysis of the nature of realism and evidence in the philosophy of mind. (shrink)