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Wechsler Abbreviated Scale of Intelligence (WASI)
Transcript of Wechsler Abbreviated Scale of Intelligence (WASI)
- Measures knowledge of words and verbal concept formation
- Measures verbal concept formation and reasoning
These two combine to measure verbal-crystallized abilities (VIQ)
- Measures the ability to analyze and synthesize abstract visual stimuli
- Measures fluid intelligence, classification and spatial ability, broad visual intelligence, knowledge of part-whole relationships, simultaneous processing, and perceptual organization
These two combine to measure nonverbal-fluid abilities (PIQ)
Individually administered intelligence test
Abridged version of Wechsler Adult Intelligence Scale (WAIS)
Introduced in 1999
Intended for individuals between the ages of 6 and 89
Consists of four subtests:
2. Block Design
4. Matrix Reasoning
Subtests ranged from .83 to .91.
Demonstrated by the high and low alphas.
Convergent Validity- the degree to which two measures of constructs that should be related are in fact related.
Demonstrated by correlation of WASI coefficients to Wide Range Intelligence Test (WRIT) coefficients.
Convergent validity is also indicated by higher correlations between similar subtests.
Ease of use
Broad age range
Some sacrifice of clinical accuracy
Benefits of Abbreviated Measures
Basic WAIS-IV kit=$2000. Basic WASI-II kit=$230.
"The demands of research protocols and managed care environments have imposed time constraints on psychological testing resulting in efforts to develop abbreviated forms of well-established psychometric measures." (Meyer, 2000)
Valid assessment that saves time and money
Extremely useful for practitioners
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Meyer, M. (2000). Use of Wechsler Abbreviated Scale of Intelligence in a vocational rehabilitation sample. http://