Tics are rapid, repetitive, stereotyped movements or vocalizations that arise from neurobiological dysfunction and are influenced by environmental factors. Although persons with tic disorders often experience aversive social reactions in response to tics, little is known about the behavioral effects of such consequences. Along several dimensions,…

The amount of anxiety suggested the need for clinical intervention to reduce procedure-related distress in children with cancer. Younger children exhibited consistently higher levels of distress than older children and displayed a greater variety of anxious responses over a longer time span. (Author/BEF)

This study examines the differential effects of spatial density on five-year-old children who were divided into "low" and "high" on dimensions of hyperactivity-distractibility, anxiety, hostility-aggressiveness, behavior disturbance, and motor inhibition. Sex differences in interaction with the above behavioral dimensions were…