I am a psychologist in the United States (in Florida, specifically). I conduct a variety of evaluations. Occasionally, I receive referrals for IQ and academic achievement testing with school-aged children. I currently own the Woodcock-Johnson IV batteries and I also have access to the WISC-V. Based on my readings on the matter, most IQ batteries are not suited to assess individuals who are suspected of having an intellectual disability due to their inability to understand their subtests' instructions. As a result, these batteries may underestimate their intellectual functioning.
My question is the following: which intelligence battery is best suited to assess persons with suspected intellectual disabilities?
Good day,From my own point of view,The most commonly used IQ measure to assess suspected intellectual disability is the Wechsler Adult Intelligence Scale (WAIS). It is a comprehensive test that evaluates various cognitive abilities, including verbal comprehension, perceptual reasoning, working memory, and processing speed. The WAIS provides a full-scale IQ score, as well as separate scores for different cognitive domains. The assessment is administered by a qualified professional and helps in diagnosing intellectual disability by comparing an individual's results to a standardized population. It is important to note that a comprehensive evaluation should involve multiple assessments and consider other factors in addition to IQ scores.
Hello everyone,
Thank you for your answers.
Since the time I posted this question, I did receive a referral to assess this very matter. I went ahead and purchased two additional measures to supplement the Woodcock-Johnson (or WAIS). One measure is a verbally-administered test (Slosson Intelligence Test - 4), which eliminates any kind of reading comprehension from the equation. The other is the TONI-4, which can be administered nonverbally. The SIT-4 and the TONI-4 are quite short. The SIT-4 taps into Gc, and the TONI-4 into Gf. Hopefully, this approach ends up working out.
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