I have a large pool of participants (100+) who completed the WASI-II, and used these scores to calculate each participants verbal IQ, perceptual IQ, and full-scale IQ.
However, a subset of participants (n=10) completed the WISC-V instead. Is there a way to use a subset of scores from this measure to estimate their verbal, perceptual, and full-scale IQ so that they can be pooled with the other WASI-II scores?
Hello Samantha,
The short answer is, yes. The WASI-II just uses fewer subscales, so you could use the relevant subscales that the WASI does include. I'd consult the technical manuals for more detailed information.
Good luck with your work.
I agree with David. However, you'll be exposing your study to criticism when it goes out under review, because not all participants will have received the same evaluation. There are a few possible courses of action to take here:
1. Simply explain the situation and emphasize the very strong correlation between WASI scores and WAIS scores (you'll have to get those figures from the Manual).
2. Only use the WAIS-5 subtests that are also on the WASI. You still need to state that most participants completed the full WAIS-5, but your data will be consistent across participants.
3. Don't use the WASI participants, or analyze them separately. Since you have just 10 of them in a sample of over 100, the first option makes more sense - you won't lose much statistical power, though maybe they are important cases?
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