False belief understanding: The influence of person,grammatical mood,counterfactual reasoning and working memory

The present study had two major goals. The first goal was to assess the relative difficulty among different versions of the unexpected contents task by systematically varying the dimensions of grammatical mood (indicative vs. subjunctive) and person (self vs. other), and to examine the correlational pattern between these different versions of the unexpected contents task and the unexpected locations task. The second goal was to examine the specificity of the relation between false belief understanding and counterfactual reasoning after controlling for age and working memory ability. One hundred, 3‐ to 6‐year‐old, children were administered two measures of false belief understanding (two versions of the unexpected contents task and two versions of the unexpected locations task), two measures of counterfactual reasoning and a working memory measure. Results showed that performance on the unexpected contents task did not significantly differ across conditions. However, only the conditions of the unexpected contents task that concerned another person's false belief correlated significantly with the unexpected locations task. Moreover, counterfactual reasoning was found to explain a significant amount of variance in the unexpected locations task, even after controlling for age and working memory performance. Findings are discussed in the context of different accounts of the development of theory of mind, and in the context of different interpretations of the relation between false belief understanding and counterfactual reasoning.