We want to assess the relationship between intelligence and learning potential in an episodic memory test in older adults. We want to use this version for faster administration and correlate IQ with learning curve.
In short, yes it is. As the name suggests, the WASI is a condensed intelligence battery. The WASI-II has norms up to age 90, making it appropriate in older adults.
Of the four subtests, Vocabulary tends to be the most resilient to the effects of neuropathology and so the best estimate of premobid intelligence. But the overall IQ estimate is frequently used, as well as comparisons of performance on verbal versus perceptual indices. See the attached PDF for more information.