An investigation was undertaken to further the conceptual and operational nature of interpersonal solidarity. Specifically, the investigation considered additional criterial attributes of solidarity to those previously studied by L. R. Wheeless. The sample consisted of 162 adults drawn from elementary and secondary school teachers, college students, child development professionals, and members of a community service club. Each subject received a packet containing scales measuring perceived homophily, interpersonal attraction, feeling good, and interpersonal solidarity, and each was instructed to complete the scales with a target person in mind. The results indicated that interpersonal attraction and perceived homophily were related constructs. In addition, perceived homophily and attraction were both found to be criterial attributes of interpersonal solidarity, while feeling good was found to be highly related to solidarity. (FL)