A Longitudinal Predictive Validity Investigation of the Sb:Fe and K-Abc With At-Risk Children

Abstract
The predictive validity of the Stanford-Binet Intelligence Scale: Fourth Edition (SB:FE) and Kaufman Assessment Battery for Children (K-ABC) was investigated by testing a sample of African-American and White children from impoverished families over an 8-year period. The cognitive tests were administered at ages 4, 6, and 9, and the Metropolitan Achievement Test was administered each year from kinder garten through sixth grade. Predictive validity coefficients for both tests were moderately strong and quite consistent over time. The cor relations between the cognitive and achieve ment measures were adequate for the youngest group of children and improved when the pre dictors were administered at later ages. The K-ABC Achievement scale was found to be the best predictor of academic achievement, par ticularly for the school-aged children. Each test predicted academic performance of both African-American and White children equally well.