The development of false belief 1 Running head: JAPANESE FALSE BELIEF UNDERSTANDING The Development of False Belief Understanding in Japanese Children: Delay and Difference?

Three experiments investigated the development of Japanese children's false belief understanding. In Experiment 1, children's mastery of two standard false belief tasks was considerably later and slower than typically reported, with the full development between 6 and 7 years. Experiments 2 and 3 tested Japanese 6to 8-year-olds on interpersonal transfer tasks where a relocated item was a person who changed locations with and without their own intention. Children's judgments on the main character's belief about this person's whereabouts were not influenced by the protagonists' different mental states included in the tasks; children's justifications referred not to the people's belief or desire but primarily to their behaviors and social rules. Results suggest that Japanese children show not only a delay in false belief understanding but a cultural difference in reasoning about human action as attributing it to behavioral and situational cues, rather than to individuals' mental states.