Direct observational data were collected on the behavior of 26 elementary school-age boys with fragile X syndrome (FXS), the most prevalent inherited cause of mental retardation, during classroom academic activities. Findings indicated classroom engagement comparable to that of peers and not related to intrasubject variables such as severity of…

This paper covers selected findings from three studies that compared different diagnostic groups: boys with attention deficit disorder (ADD) with or without hyperactivity (HY) but normal reading ability; boys with reading disability (RD) but not HY; and boys with both RD and HY. Studies examined an adapted task to assess frontal and temporal lobe…