Eleven subtests: six Verbal, five Performance
Unverified. The Verbal / Performance split below follows standard accounts but has not yet been checked against a source on this page.
Subtest list shown for orientation only; check Wechsler (1939) before quoting it.
Assembled from forty years of earlier tests
Corwin Boake traces the Wechsler-Bellevue subtests to tests developed between 1880 and World War I, drawing on anthropometrics, association psychology, the Binet–Simon scales, language-free performance testing of immigrants and schoolchildren, and group testing of military recruits. Wechsler's subtest selection can be understood partly from his clinical experiences during World War I.1
Same person, two formulas
Sources cited on this page
- [1]Boake, C. (2002). From the Binet–Simon to the Wechsler–Bellevue: Tracing the history of intelligence testing. Journal of Clinical and Experimental Neuropsychology, 24(3), 383–405.doi:10.1076/jcen.24.3.383.981
- [2]Clinical comparison study (1942), reference list citing Wechsler, D. (1939), The Measurement of Adult Intelligence, Williams and Wilkins, Baltimore. Springer.link.springer.com
Primary source: Wechsler, D. (1939). The Measurement of Adult Intelligence. Baltimore: Williams & Wilkins.2
Related historical IQ tests
The ratio-IQ scale Wechsler criticized.
Adapted as a Performance subtest.
Non-verbal group tests behind the Performance scale.
Group verbal tests related to several subtests.
Memory assessment from the same author.
The restandardized adult scale.