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Procedure: The WASI is a measure of general cognitive ability designed for use in adults and older adolescents. It is a short-form measure that was developed in tangent with, and designed to provide an estimate of, the full Wechsler Adult Intelligence Scale. It is comprised of four subscales, two verbal and two performance (non-verbal. The two verbal subtests are: i) vocabulary, and ii) similarities. The performance subtests are: i) block design, and ii) matrix reasoning. Each subtest is described individually in the sections below. The WASI provides standard scores (M= 100, SD= 15), on verbal IQ, performance IQ and fullscale IQ. Raw scores are converted into age-adjusted standardized scores using tables provided in the WASI manual. Note that only the vocabulary and matrix reasoning tests were administered at this clinic, and these were used to approximate full IQ scores.