An Investigation of the Predictive Validity of the Slosson Intelligence Test with Learning Disabled Kindergarten Children

Abstract

The purpose of this study was to investigate the predictive validity of the Slosson Intelligence Test (SIT) as a screening instrument in the identification of learning-disabled preschool children. The SIT scores of 98 "high risk" kindergarten children were correlated with the scores they obtained on the Wechsler Preschool and Primary Scale of Intelligence (WPPSI). The SIT scores were correlated .56 with the WPPSI Verbal IQ scores and .53 with Performance IQ scores. The SIT mean was 107.3 whereas the WPPSI Full Scale mean was 94.2. It was concluded that the predictive validity of the SIT was very low and that results obtained with the instrument at the kindergarten level were highly inaccurate and very misleading.