Vygotsky's views on how language is instrumental in bringing about advanced forms of intellectual functioning offer a researchable framework from which to study this development. Developmentalists in psychology and linguistics have focused for too long on continuities rather than on the process of change in mental growth. The study of the…

A study of 5-year olds' ability to distinguish promises from predictions was suspected to have achieved its results due to methodological problems. A similar study with 32 children ages 5 to 6 that used several variations of the previous study's procedures was found to have similar results, suggesting the earlier findings were an accurate…

A study was conducted to test whether three, four, and five-year-old children would be better able to use either static or dynamic properties for grouping objects, and whether performance under these conditions would be better than when no property was given. One of the two study tasks, the free sort, also used by Rosch et al. (1976), asked…