This paper contains a propositional inventory of representative studies of interpersonal distance. One hundred seventeen empirical findings were extracted from 38 randomly chosen studies investigating factors related to interpersonal distance. These findings were grouped into 31 propositions which varied widely in their degree of confirmation. The results indicated only a few well established propositions, with most being tentative and not replicated. Suggestions for future research included more attention to theoretical issues, less replication of well established findings and more effort on replication of newer findings, an "ecological systems" orientation to interpersonal distance which incorporates simultaneous analysis of nonverbal behaviors and other cue exchanges at various distances, and development of methods for more dynamic analysis of interpersonal distance phenomena. The usefulness of the propositional inventory as an information synthesis technique is also discussed.