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Similarities Subtest of the Wechsler Adult Intelligence Scale-Fourth Edition (WAIS-IV)
Please visit this website for more information about the instrument:
Exploratory: Stroke and Unruptured Cerebral Aneurysms and Subarachnoid Hemorrhage (SAH)
Short Description of Instrument
Publication Date: 2008
Ages/Grades: Individuals 16–90 years
Completion Time: 60 minutes
Scores: VIQ, PIQ, and FSIQ scores  
The Similarities Subtest of the WAIS-IV is a verbal comprehension test that measures verbal concept formation and reasoning.
Comments/Special Instructions
Scoring and Psychometric Properties
Scoring: The participant is presented with two words which represent common objects or concepts and has to describe how they are similar.
The scores on each item vary according to the degree to which the response describes a property applicable to both items in the pair of words. Raw scores are converted to age-corrected standard scores, with a mean of 10 and standard deviation of 3.
Hochstenbach JB, den Otter R, Mulder TW. Cognitive recovery after stroke: a 2-year follow-up. Arch Phys Med Rehab. 2003;84(10):1499-1504.
Wechsler D. (2008). Wechsler adult intelligence scale-Fourth Edition (WAIS-IV). San Antonio, TX: NCS Pearson.


Document last updated June 2020