Multiple levels of category inclusiveness in 4 object domains (animals, vehicles, fruit, and furniture) were examined using a sequential touching procedure and assessed in both individual and group analyses in eighty 12-, 18-, 24-, and 30-month-olds. The roles of stimulus discriminability and child motor development, fatigue, and actions were also…

Using one protocol (Role of Invisible Magnetism) and the Inhelder-Piaget method of analysis, the present investigators attempted to duplicate the results of Inhelder and Piaget. They found examples and evidence for only 8 of the 16 binary operations, and discovered 8 of the Inhelder-Piaget analyses were faulty. (Authors/MB)

Four experiments examined the processes underlying children's understanding of desire and assessed whether young children's difficulty with false belief could be explained by desire's dominance over belief. Findings indicated that for 3-year-olds, there was no correspondence between desire and belief, suggesting that desire cannot explain their…

Mental state language was examined in Mandarin- speaking and Cantonese-speaking toddlers. Results suggested that theory-of-mind development was similar to that in English, with early use of desire terms followed by other mental state references. Much earlier emergence of desire terms and infrequent use of thinking terms suggests cultural…