The identification of variables useful in the prediction of drug abuse has been the subject of a great deal of research. The research presented in this report attempts to add to the existing collection of information concerning variables useful in the prediction of drug abuse. An experimental instrument, the Social Factors Questionnaire, was examined in terms of its capacity to predict several drug abuse criteria both independently and in combination with other routinely available information. Results indicate that two experimental predictors, the lawlessness and permissiveness scores of the Social Factors Questionnaire, added significant unique variance to the prediction of drug abuse criteria when combined with the basic predictor set. (Author/HMV)