Wechsler Abbreviated Scale of Intelligence - Second Edition (WASI-II)

D Wechsler

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.

Users & Applications

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.                          

Updated Subtests

The WASI-II subtests have been updated to provide a variety of improvements including shortened and streamlined instructions, better floors and ceilings, as well as item content that more closely mirrors that of the WISC–IV and the WAIS–IV. 

Flexible Administration Options

       PRI score: Measure of nonverbal fluid abilities and visuomotor/co-ordination skills 

       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 improvecomparability with the comprehensive Wechsler scales’ composite scores. Taken together, these improvements enhance the joint use of the WASI–II and the comprehensive scales.

The WASI–II can be used in conjunction with the comprehensive Wechsler scales as a screening instrument to determine if in-depth intellectual assessment is necessary, or as a reevaluation tool to follow up on comprehensive testing.If after screening, the WASI–II results indicate comprehensive intellectual assessment is needed, the WASI–II subtestscores can be substituted for the four corresponding subtest scores on the WISC–IV or WAIS–IV, which makesadministration of those four subtests from the WISC–IV  and WAIS–IV unnecessary. 

That is, after administering the WASI–II, administeringonly six more subtests (rather than ten) from the comprehensive measure allows you to derive all WISC–IV or WAIS–IV composite scores. If the WASI–II is used as a reevaluation tool, it provides comparable FSIQ, VCI, and PRI scores to ensure interpretation of change over time is clear and meaningful.  

Features & Benefits

Psychometric Information 

       comprehensive scales.

Norms