VULNERABLE PERSONALITY IN DEPRESSION - INVESTIGATING COMMONALITY IN THE SEARCH FOR UNIFICATION

The present paper examines three models of personality and behavior - the dispositional approach, rep resented by the CEP questionnaire (Pin illos), the adjustment approach (represented by the Bell questionnaire ) and the behavioral approach (represented by the PES scale of Macphyl lamy and Lewinsohn) - with respect to the prediction of depression. Th e specific results show that variables from the first two are good pre dictors of depression and that the PES scale from the behavioral appro ach is a weaker predictor. Second, the position is taken that there ar e unrecognized relationships among different psychological tests and t he present study investigates such relationships among the three scale s as they are used in the prediction of depression. The relationships found ore analyzed in a unifying theory that calls For additional stud ies of the interrelationships of tests in prediction for the purpose o f organizing the field's excessive diversity in tests and theories and of elaborating the theory.