Wechsler Abbreviated Scale of Intelligence - Second EditionWASI-II
- A reliable brief measure of intelligence for children and adults
- Publication date:
- Completion time:
- 15-30 minutes
- Individual; Manual scoring
- Age range:
- 6 years to 90 years 11 months
- Qualification level:
The WASI–II, a revision of the WASI, provides a brief, reliable measure of cognitive ability for use in clinical, educational, and research settings. This revision maintains the format and structure of the WASI while offering new content and improvements to provide greater clinical utility and efficiency.
Features & Benefits
Uses & Applications
Psychologists and researchers can use this quick and reliable measure when screening for intellectual disabilities or intellectual giftedness, or to:
Content & Administration
The WASI–II builds on the strength of the WASI by providing updated versions of the WASI Vocabulary, Similarities, Block Design and Matrix Reasoning subtests, flexible administration options (i.e., four- or two-subtest versions), and strengthened connections with the WISC–IV and WAIS–IV.
Strengthened Connections with the WISC–IV and WAIS–IV
The strengthened connections between the WASI–II and the comprehensive Wechsler intelligence scales result in a stronger empirical foundation for using the instruments together, and offer practical benefits that help you save time. The WASI–II subtests and items have been revised to more closely parallel their counterparts in the WISC–IV and WAIS–IV. Linking studies have been conducted with the WAIS–IV and the WISC–IV to establish equivalency and to improve comparability with the comprehensive Wechsler scales’ composite scores. Taken together, these improvements enhance the joint use of the WASI–II and the comprehensive scales.
If after screening, the WASI–II results indicate comprehensive intellectual assessment is needed, the WASI–II subtest scores can be substituted for the four corresponding subtest scores on the WISC–IV or WAIS–IV, which makes re-administration of those four subtests from the WISC–IV and WAIS–IV unnecessary.
Use in Australia and New Zealand
The Australian and New Zealand office of Pearson Clinical Assessment has been involved in the development and pilot phases of the WASI-II since 2008. As a result of this involvement the language and cultural differences of Australia and New Zealand have, where possible, been taken into consideration in the WASI-II. The WASI-II standardisation was undertaken in the U.S.
WASI-II and WAIS-IV Australian and New Zealand Language Adapted Edition
The WAIS-IV Australian and New Zealand Language Adapted Edition and the WASI-II both use U.S. norms. WASI-II Substitution can therefore be undertaken with the WAIS-IV in accordance with the procedures set out in the WASI-II Administration and Scoring Manual and the Technical Report.
WASI-II and WISC-IV Australian Standardisation Edition
The WISC-IV Australian Standardisation Edition (WISC-IV Australian) uses Australian norms while the WASI-II uses U.S. norms. Supplementary analysis suggested that the limited use of U.S. WASI-II norms within the WISC-IV Australian is likely to have a negligible impact on test scores, please refer to the Technical Note below for full details. WASI-II Substitution can therefore be undertaken with the WISC-IV Australian in accordance with the procedures set out in the WASI-II Administration and Scoring Manual and the Technical Report provided below.