This article provides a selective review and integration of the behavioral literature on Pavlovian extinction. The first part reviews evidence that extinction does not destroy the original learning, but instead generates new learning that is especially context-dependent. The second part examines insights provided by research on several related…

Seventy mentally retarded students, successfully taught to conserve number and substance in the Piagetian sense, resisted attempts at extinction but were unable to generalize to other conservation tasks. (Author)

This research review examines the effects of instructional variables on the learning of handicapped and nonhandicapped individuals. The research review begins with an historical look at learning disabilities research. An overall analysis of the differential effects of instructional variables on learning-disabled and nonhandicapped individuals…

Fourteen papers discuss language behavior in schizophrenia. Provided are an introduction to the phenomena, by H. J. Vetter, and considerations of the following: problems posed by schizophrenic language, by M. Lorenz; the validity of clinical judgments of schizophrenic pathology based on verbal responses to intelligence test items, by N. F. Jones;…