A study was done to investigate the relationship between a selected set of personality dimensions and the propensities of supervisors to use varying levels of both positive and negative reinforcements. Data were collected during exercises involving 129 male undergraduate business students carried out in a behavioral laboratory wherein a production-type organization was simulated. Utilizing linear discriminant analysis, various comparisons were made between positive and negative reinforcers in order to classify individuals into different categories of reinforcing behavior using personality measurements as predictor variables. Major findings follow: (1) It is possible to identify certain personality characteristics associated with different styles of supervisory reinforcing practices; (2) those individuals who use highly rewarding methods tend to be willing to take responsibility for their own actions; are more relaxed, tranquil, and unfrustrated; prefer to make their own decisions; are careful and conventional in their approaches; and are more enthusiastic, sentimental, and natural in their outlook on life; and (3) on the other hand, those individuals who rely more on the use of negative sanctions appear to be more socially bold and unihibited in their behaviors; are more suspicious, self-opinionated and careless in their protocol; think more in abstract terms; are less willing to be truthful with themselves; and yet are more conscientious. (EM)