Book excerpt: The Preschool and Kindergarten Behavior Scales (PKBS) is a behavioral rating instrument for use in evaluating social skills and problem behavior patterns of preschool- and kindergarten-aged children, aged three through six. It is a norm-referenced, standardized instrument developed specifically for use in assessing young children in a variety of settings and by a variety of behavioral informants. The PKBS includes two major scales: social skills and problem behavior. In addition to an overview of the test, this manual contains chapters related to administering, scoring, and interpreting and PKBS; the technical properties, including reliability and validity, of the instrument; linking the assessment process to behavioral interventions; and information on its development and standardization. (Contains 58 references.) (SLD)