Inter‐subtest scatter in the WAIS‐R standardization sample

Joseph Matarazzo, Mark H. Daniel, Aurelio Prifitera, David O. Herman

Research output: Contribution to journalArticlepeer-review

56 Scopus citations


To be able to evaluate the possible diagnostic significance of the magnitude of subtest‐to‐subtest scatter on the Wechsler Adult Intelligence Scale—Revised (WAIS‐R), it is important to know the frequency of various levels of scatter in the general population. To provide this information, the magnitude of scatter across all 11 subtests, and across the subtests of the Verbal and Performance scales, was computed for each of the 1,880 individuals used in the WAIS‐R standardization. The range (difference between highest and lowest subtest scaled scores) was found to be an effective measure of scatter when compared with other, more complex indices. Scaled score scatter, which ranged from 2 to 16 points on the Full Scale, averaged 6.7 points for the Full Scale and 4.7 points each for the Verbal and Performance scales. Scatter had little relationship to age, sex, race, and years of education completed. However, the average amount of scatter increased substantially with IQ level. Normative tables for interpreting scatter are provided, and implications of these findings for the practitioner, especially in neuropsychology, are discussed.

Original languageEnglish (US)
Pages (from-to)940-950
Number of pages11
JournalJournal of Clinical Psychology
Issue number6
StatePublished - 1988

ASJC Scopus subject areas

  • Clinical Psychology
  • Arts and Humanities (miscellaneous)


Dive into the research topics of 'Inter‐subtest scatter in the WAIS‐R standardization sample'. Together they form a unique fingerprint.

Cite this