This profile of significant research findings comprises a framework for analyzing and synthesizing information on the cognitive development of children. The variables used to systematize the literature search were: perception; motor development; language; conceptual activity; and learning, memory, and problem solving. The findings are arranged…

The Porter Elementary School in Syracuse, New York introduced individually prescribed instruction (IPI) for its kindergarten through 6th grade pupils, most of whom came from lower socio-economic backgrounds. Student individual differences relating to social background physical and personality development, intellectual capacity, and school…