Аннотация:DURING the nine years since this REVIEW last treated the literature on the mentally retarded, there has been an increased emphasis on the care, education, and supervision of such children. This emphasis seems to have been stimulated, at least in part, by the shortage of manpower in industry and the consequent use of the handicapped (including the mentally retarded) in many jobs. An added impetus has come from the rapid growth of parent organizations and their requests for increased provisions for these children.