A series of stimuli designed to assess the dependence of children's cardinal number judgments on relative length and relative density cues was administered to 4- and 6-year-old children. (SB)

Three studies used illustrated stories to examine preschoolers' understanding of emotional changes when memories of past events were cued by objects in the current environment. Found substantial development between 4 and 6 years in understanding the influence of mental activity on emotions. The strength and consistency of this knowledge was…

A grouping task revealed a chronological progression: color and form determined the 4-year-old children's grouping about equally; form dominated in the 5-year-olds; and 9-year-olds grouped primarily by conceptual attributes. Performance on a memory task showed the developmental shift from color to form to concept, while cued recall showed…

Tested whether 2- to 4-year olds could reason with incongruent syllogisms when encouraged to use their imagination. Randomly assigned 2-, 3-, and 4-year olds to one of four conditions (no cue, word cue, fantasy planet, or imagery) and presented syllogistic reasoning problems with incongruent information. Found that in imagination conditions, 2-…