Alternate form reliability and equivalency of the Rey Auditory Verbal Learning Test

Assessed alternate form reliability and equivalency for the Rey Auditory Verbal Learning Test (AVLT) in a clinical sample. A test-retest, counterbalanced design was utilized with a diagnostically heterogenous group of 85 VA Medical Center patients. The mean test-retest interval was 140 min. Alternate form reliability coefficients were highly significant, all p less than .001, and ranged from .60 to .77. The forms yielded comparable means with differences of less than 1 point on each of the five learning trails and the postinterference (VI) and recognition trials. Total words recalled on trials I through V differed by less than 3 points across forms. From a statistical point of view, when the alternate form was administered second it was slightly more difficult than the original. In the reverse order, the two measures were comparable. Overall, differences between forms lacked clinical significance and the tests were judged to be equivalent measures.