This study was undertaken to determine whether students who had received less adequate instruction and were less able in scholastic aptitude test performance than the subjects in previous studies might benefit more from special instruction. Specially prepared linear programed materials were developed in the verbal and the mathematical areas.…

Sixty-six goals, mostly involving symbolic representation and cognitive processes, were evaluated to indicate those aspects of the summative research on Sesame Street that were bases for generalizing about research into the development of preschoolers. Unintended and intended outcomes were investigated as well as the program's effectiveness for…

A criterion-referenced instrument, Inventory of Cognitive Skills and Visual-Motor Functioning, was devised to evaluate a prekindergarten program for economically disadvantaged 4-year-olds. The Inventory, administered to each child at the beginning and end of the preschool experience, provided specific information in: (1) knowledge of body parts,…