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Similarities Subtest of the Wechsler Adult Intelligence Scale-Fourth Edition (WAIS-IV)
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Exploratory: 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.
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.

Wechsler D. (1997). Wechsler adult intelligence scale-III. New York: Psychological Corporation.