A significant positive correlation between multiple classification was found, in testing 65 children aged 6 to 8 years, at the stage of concrete operations. This is interpreted as support for the existence of a structure d'ensemble of operational schemes in the period of concrete operations. (Authors)

Questions that come before the relevant material seem to affect attention only, and questions that come after the relevant material seem to affect retention or rehearsal only. (Author)

Results indicated that Piagetian developmental level significantly predicted problem-solving performance, whereas level of field independence did not appear to clarify individual differences in a meaningful way. (Author)

These data have important implications for both theories of memory in general and for theories of retardate memory in particular. (Author)

Findings provide information about developmental differences in sorting and recall, as well as evidence that organizational training may influence recall performance. (Authors)

A theoretical framework stemming from the evolutionary psychology of Herbert Spencer, along with two experiments with young children as subjects, are presented. (Authors)

General conclusion is that children of 5 to 7 years of age seem unlikely to be able to respond to teaching methods based on the grammatical structure of sentences. (Author/MB)

Study investigated whether visual serial search time for letters differed significantly from visual serial search time for numbers. (Author/MB)

It was concluded that developmental differences in focusing are related to developmental differences in reflection-impulsivity. (Author)

Authors believe that they have tentatively demonstrated that the Montessori curriculum is effective over a period of two years in nurturing continuing development in children in the areas of visual-motor integration, matching and sorting skills, psycho-motor skills, and to some extent number concepts. (Authors/MB)

Experiments conducted to test theoretical formulations in verbal learning which have suggested a strategy for teaching a vocabulary list of foreign plus English word pairs. (MB)

Purpose of the study was to evaluate the effectiveness of a hierarchically arranged instructional program in multiple classification, which refers to the ability to define a class by two or more attributes simultaneously. (Authors/MB)