This response to a paper by Guess and Carr (EC 602 212) on stereotypy and self-injurious behavior in the disabled commends their theoretical thoroughness and attention to prevention but notes the lack of attention to neuroanatomical and neurochemical aspects of such behavior patterns. (DB)

This rejoinder to critiques (EC 602 213-215) of the authors' article (EC 602 212) on stereotypy and self-injury in the disabled responds to specific objections raised, including misleading statements, failure to address other existing models, misunderstandings, and need to include neurochemical factors. (DB)

Analysis of questionnaires completed by parents of young children with either Prader-Willi syndrome (N=84), Down syndrome (N=56), or typically developing (N=86), found children with Prader-Willi exhibited more compulsions, skin-picking, and tantrums than did the other groups. Discriminant analysis identified two functions (developmental milestones…

A three-level model explains the emergence and maintenance of rhythmic stereotypy and self-injury in disabled individuals: Level 1, internally regulated rhythmic behaviors; Level 2, stereotypy and self-injury as adaptive responses to understimulating or overstimulating environments; and Level 3, stereotypy and self-injury as learned behaviors to…

The Child Development Inventory (CDI), a restandardized version of the Minnesota Child Development Inventory, is completed by parents to measure the developmental progress of their children ages 15 months to 6 years or children judged to be functioning in that age range. It measures present development in eight areas: social, self-help, gross…