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

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.