This paper describes Williams syndrome, a rare genetic disorder that results in mental retardation. An overview of this condition is presented from the perspective of a family who traveled through the many stages of the disability from infancy to young adulthood. The etiology and characteristics of the disability are discussed, including…

This paper describes the Early Screening Project (ESP), a system to identify behavior problems among preschool children ages 3 to 5. The ESP is a three-stage, multiple-gating set of procedures which assesses both the frequency and intensity of adjustment problems. In Stage 1, teachers rank students on externalizing and internalizing behavior…