Study concerned with the effects of procedural differences on the classification of geometrical stimuli. (Author)

Investigates why children under eight years of age show categorical clustering above chance expectations in free recall, when such organization does not correlate with recall. Six-year-old children and adults were tested for memory of 24 pictures of categorizable items. Proportion of items recalled in category strings and number of strings of each…

Results indicated that availability of categories rather than frequency of words seemed most crucial in determining developmental changes in clustering efficiency. (Authors)

Piaget, in describing the sequence of classificatory development, describes class inclusion as composed of two processes; hierarchical classification and post-whole comparisons. In the experiment reported here, elementary school children, trained in the concept of sets in first grade mathematics were given a task where they were required to assess…