A correlational analysis of the Revised Beta, the Wechsler Memory Scale, and the Ammons' Quick Test (Forms 1, 2, 3) with 30 clients from a vocational rehabilitation center yielded correlations with the WAIS of .83, .80, and .84 respectively. For a retarded subgroup of 16 Ss only the Wechsler Memory Scale was significantly correlated with WAIS IQ (R = .61). The Revised Beta correlation of .37 suggested this test may be less reliable when used with mentally retarded Ss.
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