If they are to develop more effective social intervention strategies, social scientists must pay attention to social causality in their research. This will lead to more credibility for the social sciences and more support for research funds. Social causality is defined as a social process that produces a change in some dependent variable. It reflects a social mechanism rather than a physical one. There are many reasons why the social sciences have not paid much attention to the problem of causality--e.g., the sheer number of causal mechanisms, the confusion between causal modeling and causal processes, and the size of the social system. Appropriate methodological procedures for studying causality include studies across time and the random assignment of causal mechanisms. (RM)