The present investigation examines the alternate-form and longitudinal reliability of two versions of the Auditory-Verbal Learning Test (AVLT) on a large, multiregional, healthy male sample. Subjects included 2,059 bisexual and homosexual HIV-seronegative males recruited from the Multicenter AIDS Cohort Study from centers in Baltimore, Chicago, Los Angeles, and Pittsburgh. The findings revealed no significant differences between forms upon initial or 1-year longitudinal administration, supporting the equivalence of the two versions. However, significant practice effects were noted longitudinally, arguing for the need of appropriate retest normative data. Furthermore, as age, ethnicity, and education were found to significantly affect test performance, it is recommended that normative data be interpreted according to these variables. In addition to providing normative and longitudinal data, this investigation presents information concerning the use and limitations of the alternate forms of the AVLT.

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