This report describes development of psychometric materials for use in research on interpersonal exchange and self-disclosure. The materials included 671 statements about various aspects of the self which people might discuss as they form interpersonal relationships with others. The items were scaled for intimacy and topical category by judges from two different populations. The item pool was developed in connection with a research program being conducted on social penetration processes which occur in the development and dissolution of interpersonal relationships. A general hypothesis of the theoretical approach is that interpersonal relationships develop systematically over time, with gradually increasing mutual interpersonal exploration by DYAD members via exchange of personal information, expression of effect, engaging in joint social activities.