Research on the self-concept and postulated causal links among a number of correlates has been particularly prolific. Yet at the present time there still persists disagreement on a number of pertinent issues. One major issue that has been shown in the review of correlates of self-concept is the need to specifically identify what is being studied--global self-concept or specific areas (domains) of self-concept. The lack of a clear definition of what is being measured has been a significant reason for the lack of consistency in previous research results. Theories of causation must be formulated in a thorough, logical manner. The complexity of the many combinations of the self-concept and its correlates demands a clear statement of research goals and hypotheses.