On the Internal Consistency of the Beta II

Abstract

The internal consistency of the Beta II, a recent revision of the Revised Beta Examination, was examined for a sample of alcoholic inpatients (81 men, 19 women) of low ability and socioeconomic status. They were aged 19 to 65 yr. ( M = 36.6, SD = 9.2) and had been admitted for treatment at a state agency for rehabilitation for alcoholism. Pearson inter-correlations were reported as well as the correlations between subtests and the sums of scaled scores. The median subtest intercorrelation was .51 and the median subtest-sum of scaled scores correlation was .76. Although these coefficients were smaller than those reported for the previous edition of the Beta, they compared favorably with results obtained for the recent revision of the Performance scale of the WAIS.