The Developmental Test of Visual Perception - Adolescent and Adult (DTVP-A) is a battery of six subtests that measure different but interrelated visualperceptual and visual-motor abilities. The battery, which is designed for use with individuals ages 11-0 through 74, has empirically established reliability and validity. The normative sample consists of 1,664 adolescents and adults residing in 19 states: demographic characteristics approximate the current census data.