Key Informant Models for Measuring Group-Level Variables in Small Groups

Abstract:     
We offer a new conceptualization and measurement models for constructs at a group-level of analysis in small group research. The conceptualization starts with classical notions of group behavior proposed by Tönnies, Simmel, and Weber but then draws upon plural subject theory by philosophers Gilbert and Tuomela to frame a new perspective applicable to many forms of small group behavior. In the proposed measurement model, a collective property is operationalized as interdependent interpersonal action that explicitly allows us to control for systematic (method) error and random error. Group members act as key-informants of group properties and processes and are treated as methods in a multi-trait multi-method setting to validate our models. The models are applied to empirical data of 277 three-person groups to develop and illustrate new procedures for ascertaining variation in measures due to hypothesized construct(s), method error, and random error. Implications and guidelines for small group research are discussed.

Number of Pages in PDF File: 56

Keywords: Key informant model, small groups, construct validity, multi-trait multi-method matrix

JEL Classification: C30, C81

working papers series