The Brigance Infant and Toddler Screen: standardization and validation.

The goal of this study is to present research behind the downward extension of the Brigance Screens into the 0- to 2-year-old age range. Items were selected from the Brigance Inventory of Early Development (standardized on 1156 children) to produce fine motor, receptive language, expressive language, gross motor, self-help, and social-emotional subtests. Sites included 29 pediatric offices, day-care centers, and developmental evaluation centers in 22 states. Subjects were 408 children, 0 to 24 months of age. Internal consistency, test-retest, and interrater reliability ranged from 0.98 to 0.99 for both the Infant and Toddler Screens. Parent report and direct elicitation versions/observation varied by an average of only one point. Correlations with diagnostic measures were high (0.46 to 0.91). Specificity ranged from 85% to 86% and sensitivity ranged from 76% to 77%. Accordingly, the Brigance Infant and Toddler Screens are shown to be accurate, valid, and reliable tools that can be administered by a range of professionals using either parent interview or direct elicitation/observation or both.