The efficiency of the revised denver developmental screening test as a language screening tool

The purpose of this study was to determine the number of false positives and false negatives derived from the language domain of the Revised Denver Developmental Screening Test (RDDST) in a community preschool screening. Six months after the initial screening, 199 RDDST protocols were reviewed and the status of each child was documented. The study identified nine false positives and three false negatives, which resulted in a positive hit rate of 93.5%. The results of the study indicate that the RDDST is an effective tool in predicting the need for formal assessment.