Evaluation of the cognitive, behavioral, and adaptive functioning of 12 retarded men with fragile X syndrome indicated that fragile X men were largely indistinguishable from comparison groups. They were, however, significantly more likely to have achieved levels of adaptive functioning commensurate with their intellectual abilities. (Author/DB)

Fifty-eight people (ages 2 to 66) receiving residential or other services for idiopathic mental retardation were evaluated for evidence of metabolic disease. Five (8%) demonstrated symptoms pointing to specific genetic metabolic defects, suggesting the need for evaluation of other similar populations with idiopathic mental retardation. (Author/DB)