NONVERBAL FACTORS DERIVED FROM CHILDRENS PERFORMANCES ON NEUROPSYCHOLOGICAL TEST INSTRUMENTS

This article explores constructs underlying nonverbal abilities in chi ldren as measured by neuropsychological test instrument. A principal-c omponents factor analysis with a varimax rotation was used to examine the relationships between performances on subtests from the Wechsler I ntelligence Scale for Children-Revised, subtests from the Wide Range A ssessment of Memory and Learning, the Beery Developmental Test of Visu al-Motor Integration, Benton's Visual Form Discrimination Test, Trail Making, Grooved Pegboard, and Finger Tapping. Four factors with eigenv alues greater than 1 were obtained, which accounted for 61% of the var iance. These included a visuospatial-motor factor. a psychomotor speed factor, a visual-attentional factor, and a factor comprised of visual learning, visual sequencing, and complex-processing speed.