Donders J
Mary Free Bed Hospital, Grand Rapids, MI 49503.
J Clin Psychol. 1993 Mar;49(2):255-60. doi: 10.1002/1097-4679(199303)49:2<255::aid-jclp2270490220>3.0.co;2-q.
The factor structure of the WISC-R was examined in a sample of 108 children with traumatic brain injury. Principal factor analysis of 11 WISC-R subtests yielded three factors, which were subjected to varimax rotation. The rotated factor pattern suggested the existence of a Verbal Comprehension factor, a Perceptual Organization factor, and a somewhat weaker third factor. The meaning and implications of this third factor are discussed.