In a recently reported study, the functional components of imagery and vocalization strategies in children's verbal discrimination learning were examined, following the combined experimental/correlational logic of Underwood. The present research extends those results to a strategy that (unlike imagery and vocalization) has a positive influence on subjects' simple frequency discriminations. It was found that for such a strategy, both subjects' ability to discriminate frequency as well as their ability to discriminate their previous rehearsal activity are positively correlated with discrimination learning performance. A number of theoretical implications of these findings are discussed.This study represents a continuation of research into the functional components of rehearsal strategies in children's verbal discrimination learning. Recently, Ghatala, Levin, and Subkoviak (1975) demonstrated that the adoption of Underwood's (1975) individual differences crucible can provide a powerful analytical tool with which to attack this problem. In the initial study, Ghatala, Levin, and Subkoviak utilized this methodological technique to test three rival hypotheses concerning the mechanism(s) underlying the known facilitative effects of imagery and pronunciation strategies in children's verbal discrimination learning (e.g.,