The effect of children on adult language has only recently received serious consideration in the fields of linguistics, psychology, education, pediatrics and anthropology, although the importance of parental behavior for the language development of the child is universally recognized. This paper presents a review of the literature on children's verbal and non-verbal behavior, dating from the early 40's to the present. A brief critical reaction is given in each review indicating the specific contribution of each study. A bibliography is appended. (AMH)