Citation

Ryan JJ, Paolo AM, Smith AJ. Psychol. Assess. 1992; 4(1): 63-66.

Copyright

(Copyright © 1992, American Psychological Association)

DOI

10.1037/1040-3590.4.1.63

PMID

unavailable

Abstract

Assessed the validity of Wechsler Adult Intelligence Scale--Revised (WAIS--R) intersubtest scatter (as measured by the scaled score range and profile variability index) as an indication of cognitive impairment due to brain dysfunction. Ss were 216 brain-damaged men with means for age, education, and Full Scale IQ of 54.54 yrs (SD = 14.56), 11.58 yrs (SD = 2.53), and 85.65 (SD = 11.02), respectively. The scatter indexes for brain-damaged Ss were compared with those of the WAIS--R standardization sample.

RESULTS indicate that intersubtest scatter among brain-damaged patients with Full Scale IQs ≤109 is not greater than for "normal" persons with similar IQs. Likewise, the number of patients at different ability levels with abnormal scatter was highly similar to that for the standardization sample. Interpretation of marked intersubtest variability as a sign of brain damage appears unwarranted.

Language: en