This review of the literature on aptitude by treatment interaction concentrates on studies which investigated two or more instructional treatments in a quantitative subject area--primarily mathematics--with different populations of students on whom measures of individual differences in aptitude were available. Designed to formulate some tentative…

Describes study that investigated the roles of locus of control and learner control over sequencing of content and the ability of undergraduate students to locate and retain information in computer-based instruction. The correlation of grade point average with accuracy of retrieval and retention is also explored. (41 references) (LRW)