Theorizing about children’s early development is beset with interpretational complexities. I argue that there is a general tendency to over-interpret the experimental findings, and that one of the main causes of this is the difficulty of disengaging from our adult frame of reference when theorizing about the young child’s mind. One domain where this holds is children’s ability to differentiate themselves from others. In relation to this I first critically analyze some cases of interpretational complexities, and then apply my methodological (...) and conceptual concerns to children’s perspective-taking abilities. This has a specific bearing on the classical false-belief task, which is a perspective-taking task. Part II proposes a new, what I call, a ‘Piagetian reading’ of the false-belief test. My new interpretation of the test suggests two different ways of perspective-taking of which one is egocentric in Piaget’s sense. Concluding Part III elaborates on some implications of the proposed reading of the test for a number of findings in the Theory-of-Mind field. (shrink)

The poor performances of typically developing children younger than 4 in the first-order false-belief task “Maxi and the chocolate” is analyzed from the perspective of conversational pragmatics. An ambiguous question asked by an adult experimenter (perceived as a teacher) can receive different interpretations based on a search for relevance, by which children according to their age attribute different intentions to the questioner, within the limits of their own meta-cognitive knowledge. The adult experimenter tells the child the following story of object-transfer: (...) “Maxi puts his chocolate into the green cupboard before going out to play. In his absence, his mother moves the chocolate from the green cupboard to the blue one.” The child must then predict where Maxi will pick up the chocolate when he returns. To the child, the question from an adult (a knowledgeable person) may seem surprising and can be understood as a question of his own knowledge of the world, rather than on Maxi's mental representations. In our study, without any modification of the initial task, we disambiguate the context of the question by (1) replacing the adult experimenter with a humanoid robot presented as “ignorant” and “slow” but trying to learn and (2) placing the child in the role of a “mentor” (the knowledgeable person). Sixty-two typical children of 3 years-old completed the first-order false belief task “Maxi and the chocolate,” either with a human or with a robot. Results revealed a significantly higher success rate in the robot condition than in the human condition. Thus, young children seem to fail because of the pragmatic difficulty of the first-order task, which causes a difference of interpretation between the young child and the experimenter. (shrink)

I argue that uniquely human forms of ‘Theory of Mind’ are a product of cultural evolution. Specifically, propositional attitude psychology is a linguistically constructed folk model of the human mind, invented by our ancestors for a range of tasks and refined over successive generations of users. The construction of these folk models gave humans new tools for thinking and reasoning about mental states—and so imbued us with abilities not shared by non-linguistic species. I also argue that uniquely human forms of (...) ToM are not required for language development, such that an account of the cultural origins of ToM does not jeopardise the explanation of language development. Finally, I sketch a historical model of the cultural evolution of mental state talk. (shrink)

Joint attention is an everyday phenomenon in which two or more individuals attend to an object, event process or property in the presence of each other, such that their attention to that object is to some degree intertwined with the other’s attention to it. This paper argues that joint attention has the normative role of enabling subjects to coordinate their actions in a way that would contribute to the rational execution of a joint action in accordance with a prior shared (...) plan or shared intention. This understanding of the normative function of joint attention underpins a particular understanding of the nature of joint attention: what I shall call Rich Relationalism. Rich Relationalism argues for the view that joint attention acts as an epistemically significant interface between the world, other people, and their background plans and concepts. It understands joint attention as an object-dependent, conceptually structured, token experiential state that is shared by two (or more) people. It can be contrasted with non-relational (i.e., Representational or Enactivist) accounts of joint attention on the one hand, and Lean Relationalist accounts on the other (such as John Campbell’s influential account). (shrink)

Nativists about theory of mind have typically explained why children below the age of four fail the false belief task by appealing to the demands that these tasks place on children’s developing executive abilities. However, this appeal to executive functioning cannot explain a wide range of evidence showing that social and linguistic factors also affect when children pass this task. In this paper, I present a revised nativist proposal about theory of mind development that is able to accommodate these findings, (...) which I call the pragmatic development account. According to this proposal, we can gain a better understanding of the shift in children’s performance on standard false-belief tasks around four years of age by considering how children’s experiences with the pragmatics of belief discourse affect the way they interpret the task. (shrink)

Henry Wellman and colleagues have provided evidence of a robust developmental progression in theory-of-mind (or as we will say, “mindreading”) abilities, using verbal tasks. Understanding diverse desires is said to be easier than understanding diverse beliefs, which is easier than understanding that lack of perceptual access issues in ignorance, which is easier than understanding false belief, which is easier than understanding that people can hide their true emotions. These findings present a challenge to nativists about mindreading, and are said to (...) support a social-constructivist account of mindreading development instead. This article takes up the challenge on behalf of nativism. Our goal is to show that the mindreading-scale findings fail to support constructivism because well-motivated alternative hypotheses have not yet been controlled for and ruled out. These have to do with the pragmatic demands of verbal tasks. (shrink)

The litmus test for the development of a metarepresentational Theory of Mind is the false belief task in which children have to represent how another agent misrepresents the world. Children typically start mastering this task around age four. Recently, however, a puzzling finding has emerged: Once children master the FB task, they begin to fail true belief control tasks. Pragmatic accounts assume that the TB task is pragmatically confusing because it poses a trivial academic test question about a rational agent’s (...) perspective; and we do not normally engage in such discourse about subjective mental perspectives unless there is at least the possibility of error or deviance. The lack of such an obvious possibility in the TB task implicates that there might be some hidden perspective difference and thus makes the task confusing. In the present study, we test the pragmatic account by administering to 3- to 6-year-olds TB and FB tasks and structurally analogous true and false sign tasks. The belief and sign tasks are matched in terms of representational and metarepresentational complexity; the crucial difference is that TS tasks do not implicate an alternative non-mental perspective and should thus be less pragmatically confusing than TB tasks. The results show parallel and correlated development in FB and FS tasks, replicate the puzzling performance pattern in TB tasks, but show no trace of this in TS tasks. Taken together, these results speak in favor of the pragmatic performance account. (shrink)

In the last 30 years, the key issue in developmental Theory of Mind has been if and when children are capable of representing false beliefs. Moving away from this research question, the aim of this study was to investigate the role of attentional processes in false-belief tasks. We focused on the design of the test phase and investigated two factors that may be critical for 3-year-old children’s success: the form of the wh-question and the salience of the target object. The (...) results of two experiments confirmed that 3-year olds are able to explicitly choose the correct answer in a false-belief task provided that they are allowed to focus on the protagonist throughout the task. The salience of the target object, however, was a critical factor in the design of the test phase, as increasing it had a negative effect on children’s performance. These results suggest that the experimental record of the last 30 years may be skewed since standard false-belief tasks do not control for the relative salience of the wrong response, potentially hindering the performance of children under 4. We conclude that a careful investigation of performance factors in false-belief tasks has the potential to reveal deep insights into the development of Theory of Mind skills, even if not directly focused on children’s representation of beliefs. (shrink)

It has been generally assumed in the Theory of Mind literature of the past 30 years that young children fail standard false-belief tasks because they attribute their own knowledge to the protagonist. Contrary to the traditional view, we have recently proposed that the children's bias is task induced. This alternative view was supported by studies showing that 3 year olds are able to pass a false-belief task that allows them to focus on the protagonist, without drawing their attention to the (...) target object in the test phase. For a more accurate comparison of these two accounts, the present study tested the true-belief default with adults. Four experiments measuring eye movements and response inhibition revealed that adults do not have an automatic tendency to respond to the false-belief question according to their own knowledge and the true-belief response need not be inhibited in order to correctly predict the protagonist's actions. The positive results observed in the control conditions confirm the accuracy of the various measures used. I conclude that the results of this study undermine the true-belief default view and those models that posit mechanisms of response inhibition in false-belief reasoning. Alternatively, the present study with adults and recent studies with children suggest that participants' focus of attention in false-belief tasks may be key to their performance. (shrink)

We use mental files to present an analysis of children's developing understanding of identity in alternative naming tasks and belief. The core assumption is that younger children below the age of about 4 years create different files for an object depending on how the object is individuated. They can anchor them to the same object, hence think of the same object whether they think of it as a rabbit or as an animal. However, the claim is, they cannot yet link (...) their files to one another to represent that they have the same referent. Without linking the information contained in one file is not available in the other file. Hence, when thinking of the object as a rabbit the information that it is also an animal is not available. For representing a person's belief about an object a vicarious file contains what the person believes about the object. To capture that the belief is about that object the vicarious file has to be linked to the regular file, which by assumption children younger than 4 years cannot do. This assumption can therefore explain why problems with alternative naming and understanding false beliefs are overcome at the same age. (shrink)

This mini configurative review links theory of mind research with school-based social skills interventions to reframe theoretical understanding of ToM ability based on a conceptual mapping exercise. The review’s aim was to bridge areas of psychology and education concerned with social cognition. Research questions included: how do dependent variables in interventions designed to enhance child social-cognitive skills map onto ToM constructs empirically validated within psychology? In which ways do these mappings reframe conceptualization of ToM ability? Thirty-one studies on social-cognitive skill (...) with typically-developing children ages 3–11 were included as opposed to explicit ToM trainings in light of an identified performance plateau on ToM tasks in children. Intervention DVs mapped onto the following ToM constructs in at least 87% of studies: “Representation of Others and/or Self,” “Knowledge/Awareness of Mental States,” “Attributions/Explanations of Mental States,” “Social Competence,” “Predicting Behavior,” and “Understanding Complex Social Situations.” The absence of false-belief understanding as an intervention DV indicated a lack of direct training in ToM ability. A hierarchy to further organize the review’s ToM framework constructs as either skills or competences within the construct of ‘Representation of Others and/or Self’ is proposed. Implications for the conceptualization of ToM and social-cognitive research as well as educational practice are discussed, namely how school social skill interventions conceptualize skill along a continuum in contrast to the common artificial dichotomous assessment of ToM skill, yet the development of ToM can nevertheless be supported by the school environment. (shrink)

In his recent book “Becoming Human” Michael Tomasello delivers an updated version of his shared intentionality (SI) account of uniquely human cognition. More so than in earlier writings, the author embraces the idea that SI shapes not just our social cognition but all domains of thought and emotion. In this critical essay, we center on three parts of his theory. The first is that children allegedly have to earn the status of “second persons” through the acquisition of collective intentionality at (...) age 3. We make the case that humans take a second-personal stance toward others even as infants. The second point concerns Tomasello’s claim that 3-year-olds are group-minded and think in terms of “us” vs. “them”. We doubt both that children this young have a clear overview of their in- and out-groups and that they possess the “agonistic spirit” necessary for inter-group competition. Third, due to his focus on collective intentionality and how it might explain 3-year-olds’ difficulties with theory of mind problems, Tomasello appears to pay less attention to the crucial conceptual change that allows 4- to 5-year-olds to master such tasks. (shrink)

In this article, we postulate that belief understanding unfolds in two steps over ontogenetic time. We propose that belief understanding begins in interactive scenarios in which infants and toddlers respond directly and second-personally to the actions of a misinformed agent. This early understanding of beliefs is practical and grounded in the capacity for perspective-taking. Practical belief understanding guarantees effective interaction and communication with others who are acting on false assumptions. In a second step, children, at preschool age, acquire the capacity (...) to reflect on and arrive at third-personal judgments about a misinformed agent’s perspective. This capacity is theoretical and grounded in the ability to “confront” perspectives. It allows children to understand that beliefs can misrepresent the state of the world and to predict what (past, future, or hypothetical) actions follow from these beliefs. We conclude with ideas on how practical perspective-taking develops into theoretical perspective-confronting in early ontogeny. (shrink)

Contemporary research on mindreading or theory of mind has resulted in three major findings: There is a difference in the age of passing of the elicited-response false belief task and its spontaneous–response version; 15-month-olds pass the latter while the former is passed only by 4-year-olds. Linguistic and social factors influence the development of the ability to mindread in many ways. There are cultures with folk psychologies significantly different from the Western one, and children from such cultures tend to show different (...) timetables of mindreading development. The traditional accounts of the data are nativism, rational constructivism, and two-systems theory. In this paper, we offer criticism of these traditional cognitivist accounts and explore an alternative, action-based framework. We argue that even though they all seem to explain the above empirical data, there are other, theoretical reasons why their explanations are untenable. Specifically, we discuss the problem of foundationalism and the related problem of innateness. Finally, we explore an alternative, action-based framework that avoids these theoretical limitations and offer an interpretation of the empirical data from that perspective. (shrink)

Humans seem to readily track their conspecifics’ mental states, such as their goals and beliefs from early infancy. However, the underlying cognitive architecture that enables such powerful abilities remains unclear. Here I will propose that a basic representational structure, the belief file, could provide the foundation for efficiently encoding, and updating information about, others’ beliefs in online social interactions. I will discuss the representational possibilities offered by the belief file and the ways in which the repertoire of mental state reasoning (...) is shaped by the characteristics of its constituents. A series of questions will be outlined concerning the representational skeleton of the belief file, sketching a possible structure that supports the rapid encoding and re-identification of belief related information. After analyzing the possible limitations of the belief attribution system, I will examine some of its characteristics that might enable a flexibility that is often neglected. I will suggest that operations involving belief files are not impeded by the absence of precise first-person information regarding their contents. In fact, the system permits manipulations with “empty” belief files, allowing humans to ascribe beliefs to conspecifics based on little or no direct information regarding the content of the mental state. Such an analysis aims to advance our understanding of how spontaneous belief attribution may be performed, and to provide an insight into the possible mechanisms that allow humans to successfully navigate the social world. (shrink)

Factive mental states, such as knowing or being aware, can only link an agent to the truth; by contrast, nonfactive states, such as believing or thinking, can link an agent to either truths or falsehoods. Researchers of mental state attribution often draw a sharp line between the capacity to attribute accurate states of mind and the capacity to attribute inaccurate or “reality-incongruent” states of mind, such as false belief. This article argues that the contrast that really matters for mental state (...) attribution does not divide accurate from inaccurate states, but factive from nonfactive ones. (shrink)

Non-cognitive gadgets are fancy tools shaped to meet specific, local needs. Cecilia Heyes defines cognitive gadgets as dedicated psychological mechanisms created through social interactions and culturally, not genetically, inherited by humans. She has boldly proposed that many human cognitive mechanisms are gadgets. If true, these claims would have far-reaching implications for our scientific understanding of human social cognition. Here we assess Heyes’s cognitive gadget approach as it applies to mindreading. We do not think that the evidence supports Heyes’s thought-provoking thesis (...) that human children are taught to read minds the way they are taught to read words. We highlight a potential circularity lurking behind this analogy, and we explain why we are unpersuaded by Heyes’s anti-mentalistic proposal for handling data inconsistent with the gadget view, which others take to be evidence for mindreading in human infancy. We conclude that while human minds may well be filled with gadgets, mindreading is unlikely to be one of them. (shrink)

Although requests constitute a type of action that have been widely discussed within conversation analysis-oriented work, they have only recently begun to be explored in relation to the situated and multimodal dimensions in which they occur. The contribution of this paper resides in the integration of bodily-visual conduct (gaze and facial expression, gesture and locomotion, object manipulation) into a more grammatical account of requesting. Drawing on video recordings collected in two different hair salons located in the French-speaking part of Switzerland (...) and in France (23 h in total), this paper analyzes clients’ negative requests by exploring how they interface with the participants’ embodied conducts. Contrary to what the literature describes for positively formulated requests, with negative requests clients challenge an expectable next action (or ongoing action) by the hairdresser. One linguistic format constitutes the focus of this article, roughly glossable as ‘You don’t do [action X] too much (huh)’. Our analysis of a consistent collection of such formatted turns will show that clients present them (and hairdressers tend to treat them) in different ways, depending on how they relate to embodied conduct: When these turns are used by the client as instructions, they are accompanied by manipulations of the client’s own hair and tend to occur toward the initial phase of the encounter, at a stage when hairdressers and clients collaboratively negotiate the service in prospect. When uttered as directives, these turns are not accompanied by any touching practices from the client and are typically observable in subsequent phases of the encounter, making relevant an immediate linguistic or/and bodily response from the professional, as shown by the client who is actively pursuing mutual gaze with him/her. Therefore, an action cannot be distinguished from another on the basis of the turn format alone: Its sequential placement and the participants’ co-occurring embodied conduct contribute to its situated and shared understanding. By analyzing the clients’ use of a specific linguistic format conjointly with the deployment of specific embodied resources, this study will advance our understanding of how verbal resources and embodiment operate in concert with each other in the formation and understanding of actions, thereby feeding into new areas of research on the grammar-body interface. (shrink)

One of our main goals with “Expression unleashed” was to highlight the distinctive, ostensive nature of human communication, and the many roles that ostension can play in human behavior and society. The commentaries we received forced us to be more precise about several aspects of this thesis. At the same time, no commentary challenged the central idea that the manifest diversity of human expression is underpinned by a common cognitive unity. Our reply is organized around six issues: (1) languages and (...) their cultural evolution; (2) the pervasiveness of expression in human behavior; (3) artificial intelligence and ostensive communication; (4) communication in other animals; (5) the ecology and evolution of ostensive communication; and (6) biolinguistics and pragmatics. (shrink)

How do children learn the meanings of propositional attitude verbs? We argue that children use information contained in both syntactic distribution and pragmatic function to zero in on the appropriate meanings. Specifically, we identify a potentially universal link between semantic subclasses of attitude verbs, their syntactic distribution and the kinds of indirect speech acts they can be used to perform. As a result, children can use the syntax as evidence about the meaning, which in turn constrains the kinds of pragmatic (...) enrichments they do and do not make in understanding these verbs in conversation. (shrink)

Current theory-of-mind research faces the challenge of reconciling two sets of seemingly incompatible findings: Whereas children come to solve explicit verbal false belief tasks from around 4years of age, recent studies with various less explicit measures such as looking time, anticipatory looking, and spontaneous behavior suggest that even infants can succeed on some FB tasks. In response to this tension, two-systems theories propose to distinguish between an early-developing system, tracking simple forms of mental states, and a later-developing system, based on (...) fully developed concepts of belief and other propositional attitudes. One prediction of such theories is that the early-developing system has signature limits concerning aspectuality. We tested this prediction in two experiments. The first experiment showed that 2- and 3-year-olds take into account a protagonist's true or false belief about the location of an object in their active helping behavior. In contrast, toddlers' helping behavior did not differentiate between true and false belief conditions when the protagonist's belief essentially involved aspectuality. Experiment 2 replicated these findings with a more stringent method designed to rule out more parsimonious explanations. Taken together, the current findings are compatible with the possibility that early theory-of-mind reasoning is subject to signature limits as predicted by the two-systems account. (shrink)

How should knowledge be analyzed? Compositionally, as having constituents like belief and justification, or as an atomic concept? In making arguments for or against these perspectives, epistemologists have begun to use experimental evidence from developmental psychology and developmental linguistics. If we were to conclude that knowledge were developmentally prior to belief, then we might have a good basis to claim that belief is not a constituent of knowledge. In this review, I present a broad range of developmental evidence from the (...) past decade and discuss some of the implications it has for the proper analysis of knowledge. The orthodox perspective from the developmental literature was one where children fail to understand belief and knowledge concepts until later in childhood, with typical asymmetries in belief attribution and knowledge attribution. But what emerges from both a discussion of newer findings and a contextualization of older findings is a picture of development whereby core competence with belief and knowledge concepts emerges much earlier than previously thought that apparent failures in later childhood may be explained by other aspects of development than conceptual development and that there is no clear evidence that knowledge attributions emerge earlier than belief attributions. (shrink)

Theory of mind, the ability to attribute mental states to ourselves and others, is crucial for human social interaction and has been argued to fully develop around the age of 4. However, recent research suggests that children can perform rudimentary, preverbal ToM inferences at an earlier age, indicating a discrepancy between this early, implicit ToM and a later mastery of explicit ToM tasks. Already in the second year of life children show competence in grasping what an agent knows and does (...) not know in preverbal communication, whereas explicit performance on ToM tasks can only be observed around the age of 4. One possible explanation is that children require an additional representational resource in order to be able to associate their preverbal understanding with explicit terms that can be used to denote it in standard ToM tasks. The purpose of this thesis is to extend research on ToM in the third year of life by investigating one possible representational resource, namely mental state language. Mental state language is considered crucial for ToM development as it is the first explicit means by which children can verbalize mental states and it plays an important role for both precursors and subsequent mastery of explicit ToM tasks. However, how exactly mental state language production reflects children's awareness and comprehension of mental states remains understudied. Harris, Yang, and Cui have argued that children use mental state terms early on and possess basic representations of their own knowledge and ignorance. Since both mental state terms and basic representations appear to be present at the same time, one might assume that children already possess associations between them. However, experimental tasks that investigate mental state verbs like `know' and `think' are only able to find competence to differentiate between them around the age of 5. Thus, the extent to which the appropriate use of mental state terms in conversation reflects comprehension of the denoted mental states remains unclear. Given that mental state language develops around the second and third year of life, one may gain insight into the role it plays for a transition from implicit to explicit competence by investigating abilities which, according to our current understanding, develop around the same time and show both preverbal and verbal aspects. Perspective-taking and implicit false-belief understanding are such abilities. Children show early preverbal perspective-taking competence at the age of 24 months, but only develop verbal perspective-taking competence around the age of 3. Previous work has identified a relationship between mental state language and verbal perspective-taking at the age of 30 months, but no study has investigated this relationship in connection to preverbal perspective-taking. Also in the area of falsebelief understanding studies have mostly investigated the relationship between mental state language and explicit false-belief tasks, but no study has examined how mental state language may relate to an implicit false-belief task. Finally, mental state language has been found to correlate with a number of different competencies, among them inhibitory control and general language, but no study has systematically investigated which of these competencies serve as precursors that predict children's later mental state language production. Determining precursors is relevant for understanding crucial aspects of mental state language development and how it might relate to children's preverbal representations of mental states. The aims of the present thesis were thus to investigate the relationship between children's mental state language production and their comprehension of mental state terms and mental states, to determine the role that mental state language production may play in preverbal and verbal perspective-taking and implicit false-belief understanding and finally, to identify the basic linguistic and cognitive skills that contribute to the development of mental state language. These aims were pursued through 2 studies. In study 1, children were assessed at two time-points. Once they were tested at the age of 24 months with measures of general language, cognitive and motoric development and inhibition skills. An additional time they were tested at 27 months in order to assess children's mental state language production, their preverbal and verbal perspective-taking skills, meta-cognitive awareness of ignorance, implicit false-belief understanding and finally a task that measured their ability to infer a speaker's need for information from a statement about knowing or not knowing the location of an item and a speaker's desire for an object from statements about wanting or not wanting a particular object. The aim was to determine the concurrent relationship of children's mental state language production and their ability to comprehend and use these terms on experimental tasks, to identify the concurrent relationship between mental state language and preverbal and verbal perspective-taking and implicit false-belief understanding and finally to determine which developmental skills at the age of 24 months are significant predictors of children's later mental state language production. Study 1 showed that 27-month-olds were already able to produce mental state terms and showed a basic understanding of their own knowledge and ignorance, but failed to show comprehension of epistemic mental state terms in experimental tasks. Thus, despite their early competence in producing epistemic mental state terms, children's comprehension of these terms appeared to be limited. The results of the first study also identified that mental state language production was related to children's own verbal level-1 visual perspective-taking, in particular to usage of the verb `know/don't know' in several naturalistic contexts, independent of general language. There was also continuity from children's preverbal understanding of perspectives to their ability to report their own perspective in a verbal task. However, there was no relationship between preverbal understanding of perspectives and mental state language production according to a parental questionnaire, suggesting that early preverbal understanding of perspectives is not related to the mere production of mental state terms unless children already produce these terms in appropriate contexts. In relation to implicit false-belief understanding, children's performance suggested that they followed a simple strategy of looking at the last object location instead of demonstrating false-belief understanding. Finally, study 1 also identified sentence production, inhibition and fine motor skills at 24 months as significant predictors of children's later production of mental state language at 27 months. In study 2, children's ability to infer a speaker's need for information was investigated further by administering a pragmatic inference task from study 1 to 2-, 3- and 5-year-olds and determining at which age children showed competence. Study 2 showed that despite being able to draw the right pragmatic inferences for the mental state verb `want' at the age of 2, only at the age of 5 children were able to draw the right pragmatic inferences for the mental state verb `know/don't know'. The overall results of this thesis implied that the crucial aspect of mental state language is not mere production of the verbs, but children's experience with a variety of contexts in which mental state verbs can be used, corresponding with a socioconstructivist approach to cognitive development. The number of naturalistic contexts related to children's metarepresentations of their own ignorance, to their ability of inferring a speaker's desire and their ability to verbalize their own perspective, thus suggesting that the conversational input children receive is one of the main ways in which mental representations become explicit. Furthermore, the theoretical view that children's preverbal competence may be better explained by a production rule approach instead of early conceptual understanding is discussed. (shrink)

Human social intelligence includes a remarkable power to evaluate what people know and believe, and to assess the quality of well- or ill-formed beliefs. Epistemic evaluations emerge in a great variety of contexts, from moments of deliberate private reflection on tough theoretical questions, to casual social observations about what other people know and think. We seem to be able to draw systematic lines between knowledge and mere belief, to distinguish justified and unjustified beliefs, and to recognize some beliefs as delusional (...) or irrational. This article outlines the main types of epistemic evaluations, and examines how our capacities to perform these evaluations develop, how they function at maturity, and how they are deployed in the vital task of sorting out when to believe what others say. (shrink)