COMPARISON OF WISC AND WISC-R FULL SCALE IQS FOR A SAMPLE OF CHILDREN IN SPECIAL-EDUCATION

The WISC [Wechsler Intelligence Scale for Children] and WISC-R [Revised] were administered on occasions 2 yr apart to 186 children with learning difficulties. Ages ranged from 6-13 yr initially and from 8-15 yr at 2nd testing. Pearson correlations ranged from .85 between the WISC and WISC-R Full Scale IQ at age 9 to .96 at ages 8, 14 and 15. No significant differences were noted between the sets of Full Scale IQ.