The concept of social role range (SRR) deals with the magnitude of an individual's repertoire of different interpersonal behavior patterns and exhibits the properties of a personality trait. Over a broad range of interpersonal settings, individuals tend to be consistent in the magnitude of their SRR's. A role play technique was devised for measuring SRR, in which subjects performed in a variety of ways in four role play situations. To examine the relation of SRR to certain standard personality variables as assessed by the Adjective Checklist and the Comrey Personality Inventory, two studies using college students as research subjects were conducted. Results indicated that SRR was related to lability, affiliation, interpersonal trust, and other variables. (JAC)