A Longitudinal Study of the Relations Between Theory of Mind, Executive Function, and Lying in Children

This study used longitudinal cross-lagged modeling to examine the contribution of theory of mind (ToM), executive function (EF) to children’s lying development and of children’s lying to ToM and EF development. Ninety-seven Chinese children (initial Mage = 46 months, 47 boys) were tested three times approximately 4 months apart. Results showed that the diverse desire understanding and knowledge access understanding components of ToM, as well as the inhibitory control component of EF predicted the development of children’s lying, while the diverse belief understanding and false belief understanding components of ToM, and the working memory component of EF did not predict development of children’s lying. Meanwhile, children’s lying predicted development of children’s belief-emotion understanding components of ToM, but not any other ToM components, or EF components. These findings provide longitudinal evidence for the relation between ToM, EF, and children’s lying during the preschool years.

A two-lab direct replication attempt of Southgate, Senju and Csibra (2007)

The study by Southgate et al. (2007 Psychol. Sci. 18 , 587–592. ( doi:10.1111/j.1467-9280.2007.01944.x )) has been widely cited as evidence for false-belief attribution in young children. Recent replication attempts of this paradigm have yielded mixed results: several studies did not replicate the original findings, raising doubts about the suitability of the paradigm to assess non-verbal action prediction and Theory of Mind. In a preregistered collaborative study including two of the original authors, we tested one hundred and sixty 24- to 26-month-olds across two locations using the original stimuli, procedure and analyses as closely as possible. We found no evidence for action anticipation: only roughly half of the infants looked to the location of an agent's impending action when action prediction did not require taking into account the agent's beliefs and a similar number when the agent held a false-belief. These results and other non-replications suggest that this paradigm does not reliably elicit action prediction and thus cannot assess false-belief understanding in 2-year-olds. While the present results do not support any claim regarding the presence or absence of Theory of Mind in infants, we conclude that an important piece of evidence that has to date supported arguments for the existence of this competence can no longer serve that function.

Children With Autism Spectrum Disorder Can Attribute False Beliefs in a Spontaneous-Response Preferential-Looking Task

An established body of literature indicates that children with autism spectrum disorder (ASD) have difficulty understanding figurative language due to a deficit in theory of mind, or the ability to consider the beliefs of other people. Children with ASD tend to similarly fail traditional theory of mind tasks, which assess their ability to represent false beliefs. Our claim is, however, that these tasks involve cognitive processing demands that might mask false belief understanding because they require elicited responses. We examined whether children with ASD demonstrate false-belief understanding when tested with a spontaneous-response false belief task that measures children’s eye gaze durations. The two child participant groups were composed of 20 males with ASD (aged 3–9 years) and 20 typically developing males (aged 2–5 years) who were individually matched according to verbal mental age. Children with ASD and typically developing children listened to a change-of-location story accompanied by a book with matching and non-matching pictures. The final page showed the character searching for her object in a location that was either consistent or inconsistent with her belief. Both groups of children looked reliably longer at the belief-consistent picture, regardless of whether the character’s belief was true or false, though children with ASD were slower to do so. We suggest that a spontaneous-response assessment technique can potentially reveal figurative language comprehension in children with ASD in future research.

Little pranksters: Inhibitory control mediates the association between false belief understanding and practical joking in young children

To successfully pull a practical joke on someone, children need to understand that their victims do not know what they themselves know, be able to intentionally manipulate others’ beliefs, and maintain a straight face to safeguard the integrity of the joke. This study examined the relationship between children’s developing theory of mind (ToM), inhibitory control, and their ability to pull a practical joke. Ninety-five children between ages 2 and 6 participated in, among other measures, a practical joke task that required them to knowingly give one of the experimenters a gift box containing a rubber insect. Results showed that children’s ability to pull a practical joke was significantly related to their age, false belief understanding (FBU), inhibitory control, and verbal ability. Children with more siblings were more likely to successfully pull a practical joke. Most importantly, inhibitory control was shown to mediate the relation between FBU and practical joking. The findings provide evidence that practical joking as an example of ToM use is effortful.

Do children understand desires before they understand beliefs? A comparison of 3-year-olds’ grasp of incompatible desires, competitive games and false beliefs

A long-standing dispute in theory of mind research concerns the development of understanding different kinds of propositional attitudes. The asymmetry view suggests that children understand conative attitudes (e.g., desires) before they understand cognitive attitudes (e.g., beliefs). The symmetry view suggests that notions of cognitive and conative attitudes develop simultaneously. Relevant studies to date have produced inconsistent results, yet with different methods and dependent measures. To test between the two accounts more systematically, we thus combined different forms of desire tasks (incompatible desires and competition) with different forms of measurement (verbal ascription and active choice) in a single design. Additionally, children’s performance in the desire tasks was compared to their false-belief understanding. Results revealed that 3-year-olds were better at ascribing desires than at ascribing beliefs for both desire tasks whereas they had difficulties actively choosing the more desired option in the competition task. The present findings thus favor the asymmetry theory.