The study was designed to test by multiple factor analysis for the existence of 16 hypothesized interpersonal interaction categories. In addition, it aimed to examine evidence for a predicted circular sequence of the categories found. 3 experiments were conducted with both psychiatric outpatients and normal Ss. 14 of the interpersonal factors isolated were found to fit the circular order sequence anticipated in 3 distinct samples. Other interpersonal conceptual schemes proposed by Foa, Schaefer, LaForge-Suczek, and Cattell are briefly compared with the model suggested. (PsycINFO Database Record (c) 2016 APA, all rights reserved)