Investigated the hypothesis that preschoolers encode perceptual attributes, but not conceptual attributes, of objects in recall tasks. Children were asked to recall typical and atypical objects, or objects that varied in typicality and size. Children were influenced by both conceptual and perceptual stimulus characteristics. (LB)

Describes two studies investigating the development of recursive thinking in 60 Dutch children five, seven, and nine years of age. The first study replicated earlier research employing a verbal production procedure. The second study used verbal comprehension procedures and concluded that development appears two years earlier than indicated by the…