The Pittsburgh Adjustment Survey Scales were developed to meet the need for the objective evaluation of the social behavior of elementary school-age boys using the observations of classroom teachers. An initial item pool was reduced to 94 items by an extreme-group procedure (202 subjects). A factor analysis (209 subjects) of the inventory resulted in the isolation of four factors, labeled aggressive behavior, withdrawn behavior, passive-aggressive behavior, and prosocial behavior. Results from other samples are presented concerning test-retest reliability and construct validity. The scales do not reveal age-related change over the grades sampled. (Author)