The purpose of this study was to investigate, with underprivileged first-grade children, the efficacy of the Initial Teaching Alphabet (i.t.a.) in teaching beginning reading and of the Peabody Language Development Kit (PLDK) in stimulating oral language and verbal intelligence. From 17 classes in nine schools, four groups, consisting of 100, 104,…

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…