Epistemic trust: modeling children's reasoning about others' knowledge and intent

A core assumption of many theories of development is that children can learn indirectly from other people. However, indirect experience (or testimony) is not constrained to provide veridical information. As a result, if children are to capitalize on this source of knowledge, they must be able to infer who is trustworthy and who is not. How might a learner make such inferences while at the same time learning about the world? What biases, if any, might children bring to this problem? We address these questions with a computational model of epistemic trust in which learners reason about the helpfulness and knowledgeability of an informant. We show that the model captures the competencies shown by young children in four areas: (1) using informants’ accuracy to infer how much to trust them; (2) using informants’ recent accuracy to overcome effects of familiarity; (3) inferring trust based on consensus among informants; and (4) using information about mal‐intent to decide not to trust. The model also explains developmental changes in performance between 3 and 4 years of age as a result of changing default assumptions about the helpfulness of other people.     

The Development of Diagnostic Inference About Uncertain Causes

Young children can engage in diagnostic reasoning. However, almost all research demonstrating such capacities has investigated children’s inferences when the individual efficacy of each candidate cause is known. Here we show that there is development between ages five and seven in children’s ability to reason about the number of candidate causes whose efficacy is unknown (Study 1). We also find development between ages six and seven in these abilities when children are presented with several uncertain candidate causes in an additive causal system (Study 2). These findings demonstrate how children’s diagnostic reasoning abilities develop beyond the preschool years and illustrate possible relations between children’s developing diagnostic inference and scientific reasoning capacities.     

The Right Stuff: Preschoolers Generalize Reliability Across Communicative Domains When Informants Show Semantic (Not Episodic) Knowledge

ABSTRACT

Although preschoolers have strong expectations about the pedagogical nature of pointing gestures (Csibra & Gergely, 2006), more recent work has shown that preschoolers prefer to use informants’ spoken language, not their pointing gestures, to make judgments about their reliability (Palmquist & Jaswal, 2015). Here, we explored children’s inferences about pointers using a standard selective trust paradigm. Specifically, we asked whether 4- and 5-year-olds generalize reliability across communicative domains (from pointing ability to speaking ability). We found that children preferred to make generalizations about pointers’ reliability when they had conveyed semantic, but not episodic, knowledge. Individual differences in theory of mind also predicted children’s willingness to make generalizations about pointers’ reliability. Both sets of results suggest that multiple factors (i.e., the type of knowledge an informant shares and individual differences in children’s cognitive development) affect whether preschoolers generalize others’ reliability across domains.     

信息提供者的先前准确性对幼儿选择性信任的影响

作为社会学习的个体,幼儿从3岁起就能根据信息提供者先前准确性的差异对其可信程度进行评估。通过对以往研究效应量的整理分析发现,随年龄增长,幼儿对高先前准确性信息提供者的信任程度表现出增长趋势（3岁幼儿选择的效应量中值为d_询问=0.60,d_赞同=0.61;4岁幼儿的效应量中值为d_询问=0.80,d_赞同=0.96）。在运用先前准确性进行评估时,幼儿主要关注信息提供者是否犯错,灵活使用"整体印象"和"特质推测"两种认知策略对其未来行为进行推测。幼儿能够根据自身对材料的感知对信息提供者的可信程度进行动态调整,其心理理论发展水平和执行功能限制了他们的选择信任,而信息提供者同时具有的社会性因素对幼儿的选择也具有干扰作用（幼儿信任准确的信息提供者的效应量中值为d_询问=-0.03,d_赞同=-0.17）。未来研究可以改进实验范式,进一步探查先前准确性对幼儿选择性信任的影响,拓展信息提供者的呈现方式和其它多重特征,关注不同类别的信息提供者。     

The impact of emotional expressions on children’s trust judgments

Research on the development of selective trust has shown that young children do not indiscriminately trust all potential informants. They are likely to seek and endorse information from individuals who have proven competent or benign in the past. However, research on trust among adults raises the possibility that children might also be influenced by the emotions expressed by potential informants. In particular, they might trust individuals expressing more positive emotion. Indeed, young children’s trust in particular informants based on their past behaviour might be undermined by their currently expressed emotions. To examine this possibility, we tested the selective trust of fifty 4- and 5-year-olds in two steps. We first confirmed that children are likely to invest more trust in individuals expressing more positive emotion. We then showed that even if children have already formed an impression of two potential informants based on their behavioural record, their choices about whose claims to trust are markedly influenced by the degree of positive emotion currently expressed by the two informants. By implication, the facial emotions expressed by potential informants can undermine young children’s selective trust based on the behavioural record of those informants.     

The role of epistemic and social characteristics in children’s selective trust: Three meta‐analyses

Over the last 15 years, researchers have been increasingly interested in understanding the nature and development of children’s selective trust. Three meta‐analyses were conducted on a total of 51 unique studies (88 experiments) to provide a quantitative overview of 3‐ to 6‐year‐old children’s selective trust in an informant based on the informant’s epistemic or social characteristics, and to examine the relation between age and children’s selective trust decisions. The first and second meta‐analyses found that children displayed medium‐to‐large pooled effects in favor of trusting the informant who was knowledgeable or the informant with positive social characteristics. Moderator analyses revealed that 4‐year‐olds were more likely to endorse knowledgeable informants than 3‐year‐olds. The third meta‐analysis examined cases where two informants simultaneously differed in their epistemic and social characteristics. The results revealed that 3‐year‐old children did not selectively endorse informants who were more knowledgeable but had negative social characteristics over informants who were less knowledgeable but had positive social characteristics. However, 4‐ to 6‐year‐olds consistently prioritized epistemic cues over social characteristics when deciding who to trust. Together, these meta‐analyses suggest that epistemic and social characteristics are both valuable to children when they evaluate the reliability of informants. Moreover, with age, children place greater value on epistemic characteristics when deciding whether to endorse an informant’s testimony. Implications for the development of epistemic trust and the design of studies of children’s selective trust are discussed.     

友善特质与信息准确性对3～5岁幼儿选择性信任的影响

幼儿选择性信任的发展对幼儿社会认知和社会行为的发展有重要的促进作用。本研究探讨当信息提供者的友善特质与所提供信息的准确性相冲突时,幼儿在认知信任问题与人际信任问题上的信任选择特点。以103名3～5岁幼儿为被试,研究结果发现3～4岁幼儿在与认知信任有关问题中做出的选择与随机水平相比无显著差异,只有5岁幼儿表现出了对准确命名但不友善的信息提供者的赞同和询问偏好; 而在人际信任判断中,3～5岁幼儿均选择与具有友善特质的人为友,并将物品交于其保管。研究结果说明不同年龄段的幼儿表现出不同的信任选择倾向,且幼儿能依据不同问题灵活做出信任选择。     

幼儿基于信息判断的选择性信任的发展——其持续性及与人际信任的关系

采用物品命名任务的模式, 对60名2岁、3岁、4岁幼儿的选择性信任进行研究。结果表明:(1)幼儿更信赖那些正确率高的信息传达者, 形成选择性的信任。这种选择性信任的认知能力在3岁左右出现, 并随着年龄的增长而增强, 4岁达到稳定。(2)选择性信任一旦形成, 就具有一定的稳定性和持续性, 即3岁以上的幼儿在不同时间不同地点再见到先前的信息传达者时, 依然能区分出他们。(3)基于信息判断的选择性信任可以迁移到人际信任的其他方面。     

Preschoolers’ Theory-of-Mind Knowledge Influences Whom They Trust About Others’ Theories of Mind

Two experiments examined whether particular aspects of social-cognitive knowledge predicted how preschoolers would treat informants who displayed a more or less developed understanding of that knowledge. In Experiment 1, children's own success on false-belief measures correlated with the extent to which they endorsed information generated by a confederate with a more developed sense of false belief over a confederate with a less developed sense of false belief. In Experiment 2, preschoolers were assessed for whether they possessed a more action-based or mental state-based understanding of pretense. They were then presented with informants who displayed each kind of knowledge. Children's own knowledge again correlated with which informant they believed was a reliable source of knowledge about novel pretend actions. These results not only extend findings in the “trust in testimony” literature beyond word learning, but also potentially reveal another mechanism by which children learn from others—they might trust others’ information about a specific piece of knowledge based on examination of their own knowledge of that domain.     

Mind over grammar: reasoning in aphasia and development

Research on propositional reasoning (involving ‘theory of mind’ understanding) in adult patients with aphasia reveals that reasoning can proceed in the absence of explicit grammatical knowledge. Conversely, evidence from studies with deaf children shows that the presence of such knowledge is not sufficient to account for reasoning. These findings are in keeping with recent research on the development of naming, categorization and imitation, indicating that children's reasoning about objects and actions is guided by inferences about others’ communicative intentions. We discuss the extent to which reasoning is supported by, and tied to, language in the form of conversational awareness and experience rather than grammar.     

Children's Use of Social Categories in Thinking About People and Social Relationships

A series of studies investigated White U.S. 3- and 4-year-old children's use of gender and race information to reason about their own and others’ relationships and attributes. Three-year-old children used gender- but not race-based similarity between themselves and others to decide with whom they wanted to be friends, as well as to determine which children shared their own preferences for various social activities. Four-year-old (but not younger) children attended to gender and racial category membership to guide inferences about others’ relationships but did not use these categories to reason about others’ shared activity preferences. Taken together, the findings provide evidence for three suggestions about these children's social category-based reasoning. First, gender is a more potent category than race. Second, social categories are initially recruited for first-person reasoning but later become broad enough to support third-person inferences. Finally, at least for third-person reasoning, thinking about social categories is more attuned to social relationships than to shared attributes.     

The influence of complexity and reasoning direction on children's causal reasoning

Causal reasoning is the core and basis of cognition about the objective world. This experiment studied the development of causal reasoning in 86 3.5–4.5-year-olds using a ramp apparatus with two input holes and two output holes [Frye, D., Zelazo, P. D., & Palfai, T. (1995). Theory of mind and rule-based reasoning. Cognitive Development 10, 483–527]. Results revealed that: (1) children performed better on cause–effect inferences than on effect–cause inferences; (2) there was an effect of rule complexity such that uni-dimensional causal inferences were easier than bi-dimensional inferences which, in turn, were easier than tri-dimensional causal inferences; and (3) children's causal reasoning develops rapidly between the ages of age of 3.5 and 4 years.     

面孔吸引力和信息正确性对幼儿选择性信任的影响

实验1采用3×2×2 的混合设计, 考察4~6岁幼儿获取全新信息时基于面孔吸引力的选择性信任及其特点。结果显示：(1) 4~6岁的男孩和女孩均表现出对高面孔吸引力者的选择性信任。(2)在选择性信任程度方面：5岁比4岁高, 而4岁和6岁之间、5岁和6岁之间则相同; 女孩在询问任务中比男孩表现出更高的选择性信任, 在赞同任务中则相同。那么, 幼儿的这种选择性信任是否受到信息正确性的调节?为此, 实验2采用2×3的被试间设计, 探讨信息提供者提供信息的正确性对4~6岁幼儿基于面孔吸引力的选择性信任的影响。结果显示：在正确性为50% vs. 50%条件下, 幼儿未对信息提供者产生选择性信任; 在正确性为25% vs. 75%条件下, 幼儿对提供较大正确性信息的低面孔吸引力者产生了选择性信任。研究结果表明：(1)在信息缺乏时, 4~6岁幼儿普遍存在有偏见的选择性信任; 女孩比男孩更易受到社会偏见因素的影响。(2)在信息明确时, 4~6岁幼儿也能做出相对理性的选择性信任。     

Advertising Literacy and Executive Function: Testing Their Influence on Children’s Consumer Behavior

For decades, researchers have theorized that children’s persuasion understanding should help them cope with commercial messages. Yet, to date, there is little evidence to support this hypothesized relationship. Recently, scholars have suggested 2 potential reasons for the lack of findings. The first is that the measure of children’s persuasion understanding has not been thoroughly conceptualized, as previous work has confused knowledge of persuasive intent with knowledge of selling intent. The second is that previous research on the subject has not appropriately considered the role that cognitive development plays in helping children respond to commercial messages with a particular focus on the role that executive function should play. Working with 79 elementary school children and their parents, this study tested whether children’s advertising knowledge was associated with parent-reported consumer behavior (i.e., purchase requests) and if children’s executive function moderated this relationship. Results indicate that children’s understanding of selling intent is negatively associated with parent-reported purchase requests, but understanding of persuasive intent is not. Moreover, although children’s executive function does not moderate this relationship, it is directly associated with consumer behavior. These results offer new insights into how children’s advertising literacy and cognitive development potentially affect their consumer behavior.     

Different developmental patterns of simple deductive and probabilistic inferential reasoning

In three studies, we examined simple counterexample-based and probabilistic reasoning in children 6, 7, and 9 years of age. In the first study, participants were asked to make conditional (if-then) inferences under both categorical (certain or uncertain) and probabilistic instructions. Results showed that 6-year-olds respond to both forms of inference in similar ways, but whereas probabilistic conditional inferences showed little development over this period, categorical inferences clearly improved between 6 and 7 years of age. An analysis of the children's justifications indicated that performance under categorical instructions was strongly related to counterexample generation at all ages, whereas this was true only for the younger children for inferences under probabilistic instructions. These findings were replicated in a second study, using problems that referred to concrete stimuli with varying probabilities of inference. A third study tested the hypothesis that children confused probability judgments with judgments of confidence and demonstrated a clear dissociation between these two constructs. Overall, these results show that children are capable of accurate conditional inferences under probabilistic instructions at a very early age and that the differentiation between categorical and probabilistic conditional reasoning is clear by at least 9 years ofage. These results are globally consistent with dual-process theories but suggest some difficulties for the way that the analytic-heuristic distinction underlying these theories has been conceptualized.     

Mapping the Growth of Heterogeneous Forms of Externalizing Problem Behavior Between Early Childhood and Adolescence:A Comparison of Parent and Teacher Ratings

We compared long-term growth patterns in teachers’ and mothers’ ratings of Overt Aggression, Covert Aggression, Oppositional Defiance, Impulsivity/inattention, and Emotion Dysregulation across developmental periods spanning kindergarten through grade 8 (ages 5 to 13 years). We also determined whether salient background characteristics and measures of child temperament and parenting risk differentially predicted growth in discrete categories of child externalizing symptoms across development. Participants were 549 kindergarten-age children (51% male; 83% European American; 17% African American) whose problem behaviors were rated by teachers and parents each successive year of development through 8th grade. Latent growth curve analyses were performed for each component scale, contrasting with an overall index of externalizing, in a piecewise fashion encompassing two periods of development: K-1and grades 1–8. Our findings showed that there were meaningful differences and similarities between informants in their levels of concern about specific forms of externalizing problems, patterns of change in problem behavior reports across development, and in the extent to which their ratings of specific problems were associated with distal and proximal covariates. Thus, these data provided novel information about issues that have received scant empirical attention and have important implications for understanding the development and prevention of children’s long-term externalizing problems.     

主题关系在4~5岁儿童不同属性归纳推理发展中的作用

为探讨主题关系在儿童归纳推理中的作用,采用经典的三角归纳范式,设计了主题关系和知觉相似冲突、主题关系和分类学关系冲突两种情形,来考察4~5岁儿童在内在属性和情境性属性任务中的归纳推理。结果显示：当主题关系和知觉相似冲突时,从4.5岁开始儿童主要基于主题关系对情境性属性进行归纳推理,而对于内在属性的推论,4~5岁儿童在基于主题关系和基于知觉相似上没有显著差异。当主题关系和分类学关系冲突时,从4.5岁开始儿童主要基于主题关系对情境性属性进行归纳推理,从5岁开始儿童主要基于分类学关系对内在属性进行归纳推理。两个实验结果均发现5岁和5.5岁儿童能够依据不同的属性使用不同的关系推理,表现出归纳灵活性     

Intention Attribution in Theory of Mind and Moral Judgment

The present research investigated how children would weigh moral acts pitted against intent, across different moral domains. Twenty primary school children were recruited from an existing database and evaluated a set of acts (good-bad) on the basis of intent (good-bad) across three domains (harm, fairness, and social convention) on a 7-point Likert scale. The study found that children took into account the intention of an agent. Interestingly, intent has a differential effect on the evaluation of acts; it was more pronounced for good acts, but less so for bad acts. For the evaluation of bad acts, children placed greater weight on the intrinsic nature of the act rather than the protagonist’s intent. Conversely, whether the intent is good or bad influenced the evaluation of good acts to a greater extent. These findings not only lend support to the domain-specific view of moral reasoning but also show that children do not attribute intent in a unitary manner within theory of mind.     

Are Causal Structure and Intervention Judgments Inextricably Linked? A Developmental Study

The application of the formal framework of causal Bayesian Networks to children’s causal learning provides the motivation to examine the link between judgments about the causal structure of a system, and the ability to make inferences about interventions on components of the system. Three experiments examined whether children are able to make correct inferences about interventions on different causal structures. The first two experiments examined whether children’s causal structure and intervention judgments were consistent with one another. In Experiment 1, children aged between 4 and 8 years made causal structure judgments on a three‐component causal system followed by counterfactual intervention judgments. In Experiment 2, children’s causal structure judgments were followed by intervention judgments phrased as future hypotheticals. In Experiment 3, we explicitly told children what the correct causal structure was and asked them to make intervention judgments. The results of the three experiments suggest that the representations that support causal structure judgments do not easily support simple judgments about interventions in children. We discuss our findings in light of strong interventionist claims that the two types of judgments should be closely linked.     

Application of a Multitrait-Multimethod Matrix to Social,Emotional, and Behavioral Screening

The authors' purpose was to evaluate the multiple-gate Preschool Behavior Screening System (PBSS) for identifying children's social, emotional, and behavioral (SEB) difficulties. The sample included 122 triads of preschool children between 3 and 5 years old and their parents and teachers. The teacher and parent samples were predominantly women and European American with a substantial African American representation. The design involved numerous indicators of the reliability of scores and the validity of ensuing inferences. Scores from the Behavior Assessment System for Children, Second Edition were used as criterion measures for scores from the PBSS. The PBSS scores were found reliable across scales with Cronbach's alpha values ranging from.85 to.97. Agreement between teachers and parents was consistent with findings from previous research. Analyzed within a Multitrait-Multimethod Matrix, correlational evidence supported inferences about externalizing difficulties, prosocial behavior, and total problems, as well as internalizing difficulties to a lesser degree. Receiver-operating characteristic curve analyses supported the PBSS across a range of scales and cut scores. Findings support the use of the PBSS as one method for identifying preschool children who may be at risk for SEB difficulties and underscore the importance of using multiple informants in the assessment of SEB difficulties.