A shortened version of a learning-set training procedure was given to 80 children four and five years of age. These children and 16 untrained controls were then tested for quantity conservation. Results relate task performance on the conservation tasks to the type of training received. (Author/JMB)

This study examined the effects of 3 situational contexts varying in demands for accuracy and speed on the performance of 45 kindergarteners and 45 second grade students on the Matching Familiar Figures test of cognitive style. (JMB)

A combination of readiness and body-part training was the most effective in producing number conservation with external objects. (Authors)

Results indicate that identity conservation generally does not precede equivalence conservation; instead the two conservations tend to co-occur. (Authors)

This paper examines the concept of decalage from two cognitive-change positions (structures of logical thought and attentional and verbal mediators) and proposes an alternative explanation for decalage from a perceptual-change point of view. The term decalage is used to summarize the relation between differences in performance of various age…