An analysis of the mother's speech suggested that her mean length of utterance was unrelated to the infant's age. More object referencing and more directions were given as the child grew older. (Author/DLS)

Differential reinforcement of appropriate behavior was used in combination with a naturalistic restitution procedure utilizing victim participation to reduce the assaultive and interpersonal sexual behavior and genital self stimulation of an adolescent Down's syndrome male in a school setting. (Author/DLS)

A survey of 39 recent college textbooks in mental retardation, special education, and abnormal psychology indicates that dated and oversimplified models of the etiology of Down's syndrome are being presented.

Data on the systematic decline in IQs and Social Quotients in 217 Down's syndrome children (3 months to 15 years old) from infancy to adolescence are presented along with an analysis of the distribution of IQs within different age ranges. (Author/CL)

Four speech deficient mentally retarded children (3-5 years old) with Down's Syndrome were taught imitative verbal responses by two methods based on operant conditioning principles. (Author/CL)

Six children with Down's syndrome who had shared the same preschool 3 to 4 years were administered psychological tests to see whether there were characteristics of mental functioning held in common. (Author)

Observations by parents of 11 Down's syndrome infants and observations by parent advisors on a criterion-referenced checklist were compared to observation by trained evaluators using the standardized Bayley Scales of Infant Development. (CL)

Findings of four recent survey studies of physicians' attitudes toward discretionary medical treatment of infants with Down's syndrome are evaluated in terms of three major themes. It is apparent that most physicians in the specialities sampled prefer that life-sustaining treatment be withheld in certain instances. (Author)