Self-injurious and aggressive behaviors are common in fragile X syndrome (FXS). However, little is known about the persistence of these behaviors and associated risk markers. We established the prevalence and persistence of self-injurious and aggressive behaviors over eight years in males with FXS, and associations with risk markers. Results…

The relations of children's (n=214 at Time 1; M age=6 years at Time 1) dispositional sympathy to adult-reported and behavioral measures of effortful control (EC) and impulsivity were examined in a longitudinal study including five assessments, each two years apart. Especially for boys, relatively high levels of EC and growth in EC were related to…

Among findings from a comparison of 13 preschool hyperactive and control males assessed on receptive-communications tasks that required listening and delayed response were that Ss did not differ in task-related movements or verbalizations, but that hyperactive Ss verbalized impulsively during transitions and tasks requiring response delay. (DB)

The purpose of this study was to determine whether or not children manifesting different cognitive styles also behave differently in small-group instructional situations. Six groups of seven children each engaged in a small group videotaped learning experience in which they were to learn the English equivalent of 75 symbols. Analysis of the data…

To determine whether maternal involvement reflects her expectations about her child's ability to solve the tasks at hand, a group of 32 boys and their mothers were studied. Sixteen of the boys were classed as reflective and 16 were classed impulsive on the Matching Familiar Figures Test. The boys were matched on age (8 years 9 months and 8 years 6…