The Cooperative Language Development Project studied the efficacy of the Initial Teaching Alphabet (ITA) in teaching beginning reading and the efficacy of the Peabody Language Development Kits in stimulating verbal intelligence, creative thinking, school achievement, and language development. In this monograph, a post-test and follow-up evaluation…

The purpose of the three-year Cooperative Language Development Project was to examine the efficacy of an oral language development program and an experimental reading program in improving the academic achievement, language development, intellectual functioning, and creative thinking of disadvantaged children in primary grades. The experimental…

This book describes an experimental compensatory preschool program carried out in England between 1968 and 1973. The program combined a traditional nursery program with a daily 20-minute period focusing on specific language and perceptual activities. Experimental and control subjects, 237 in all, were selected from four state supported nursery…

The differential effects of the experimental revision of Level 1 of the Peabody Language Development Kits (PLDK) on the Illinois Test of Psycholinguistic Abilities (ITPA) profiles of disadvantaged first-grade children were studied. Contrasted with 203 control subjects were 529 experimental subjects who received a daily 30-minute oral language…