Reliability of the Maxi-Mult and scale equivalence with the MMPI

Forty chronic male alcoholic inpatients completed the MMPI and separately administered Maxi-Mult in a counterbalanced presentation order after a 3-day interval. Neither the intracorrelations among the Maxi-Mult scales nor the intercorrelation coefficients between the short and standard scales were affected by presentation order. High intercorrelations of the standard MMPI scales with the Maxi-Mult scales were found for both the separately administered and the embedded forms; coefficients tended to be higher for the embedded Maxi-Mult. Both the test-retest reliability of the Maxi-Mult and the stability of the short vs. standard-scale correlation coefficients were adequate. The economical length and the response mode of the Maxi-Mult suit it for use as a research instrument to assess group performance. A hostility scale also tested during this study was found to have a high test-retest reliability coefficient.