Humans can attribute beliefs to others. However, it is unknown to what extent this ability results from an innate biological endowment or from experience accrued through child development, particularly exposure to language describing others' mental states. We test the viability of the language exposure hypothesis by assessing whether models…

It has been well-documented that although children around 4 years start to attribute false beliefs to others in classic false-belief tasks, they are still less able to evaluate the truth-value of propositional belief-reporting sentences, especially when belief conflicts with reality. This article investigates whether linguistic cues, verb…

A key factor that affects whether and at what age children can demonstrate an understanding of false belief and complement-clause constructions is the type of task used (whether it is implicit/indirect or explicit/direct). In the current study, we investigate, in an implicit/indirect way, whether children understand that a story character's belief…

First-order theory of mind (ToM) development has shown to conform to a Guttman scale, with desire reasoning developing before belief reasoning. There have been attempts to test for internal consistency and scalability in advanced ToM, but not over a broad age range and only with a limited set of tasks. This 2-year longitudinal study (N = 155;…

This article investigates how children leverage intonational and gestural cues to an individual's belief state through unimodal (intonation-only or facial gesture-only) and multimodal (intonation + facial gesture) cues. A total of 187 preschoolers (ages 3-5) participated in a disbelief comprehension task and were assessed for Theory of Mind (ToM)…

Children under 4 years of age often evaluate belief reports based on reality instead of beliefs. They tend to reject sentences like, "John thinks that giraffes have stripes" on the grounds that giraffes do not have stripes. Previous accounts have proposed that such judgments reflect immature Theory of Mind or immature syntactic/semantic…

The goal of the current study was to statistically evaluate the reliable scalability of a set of tasks designed to assess Theory of Mind (ToM) without language as a confounding variable. This tool might be useful to study ToM in populations where language is impaired or to study links between language and ToM. Low verbal versions of the ToM tasks…

The authors examined effects of feedback and explanation on false belief performance. Thirty-three children (42-54 months; 15 girls, 18 boys) were randomly assigned to four treatment conditions: explanation, feedback, feedback researcher explains, and feedback child explains. Children completed false belief tasks during pretraining, 8 training…

It is well established that speakers accommodate in speech production. Recent work has shown a similar effect in perception--speech perception is affected by a listener's beliefs about the speaker. In this paper, we explore the consequences of such perceptual accommodation for experiments in speech perception and lexical access. Our interest is…

We investigated whether children's ability to deal with referentially opaque contexts could be predicted by both metarepresentational ability (false-belief understanding) and metalinguistic awareness (the ability to compare and evaluate statements containing referring expressions). Five- to 7-year-olds completed opacity, false-belief,…

This study assesses children's understanding of the Italian modal verbs "dovere" (must) and "potere" (may) in their dual function of qualification of the speaker's beliefs (epistemic modality) and behaviour regulation (deontic modality). 192 children and 60 adults participated in the experiment. Children aged 3;0 to 9;2 were presented with two…