1 From the Departments of Pediatrics and Biometry, Medical University of South Carolina, Charleston, and the Department of Psychiatry, The Johns Hopkins School of Medicine, Baltimore, Maryland
The cognitive and adaptive capacities of 130 individuals with Down syndrome were investigated as a function of age and environmental placement. Intellectual deterioration occurred whether individuals resided at home or in an institutional setting. Social/adaptive deterioration also occurred but with the least decline for those individuals who resided in institutional settings.
Key Words: Down syndrome intelligence adaptive behavior environment