Mean-Score Differences between the WISC-R and the Stanford-Binet Intelligence Scale

The mean score differences between the Stanford-Binet Intelligence Scale: Fourth Edition and the WISC-R changed across the ability continuum for 126 referred students. The Stanford-Binet Test Composite was significantly higher than the WISC-R Full Scale score at the lower end of the ability continuum, but was significantly lower than the WISC-R Full Scale score at the higher end. The two tests yielded similar scores for students with WISC-R Full Scale scores ranging from 70 to 89. The WISC-R scores correlated significantly with the Stanford-Binet scores.