Development and validation of a unifactorial measure of citizenship performance

Citizenship Performance has long been accepted as an important aspect of performance, but there has been little consensus on how best to measure this construct. Previous measures have assessed as many as five sub‐factors, yet recent meta‐analyses have indicated that citizenship is largely unifactorial. At the same time, none of the previously developed unifactorial Citizenship Performance scales have been adequately validated. Consequently, this article reports the development of a unifactorial measure of Citizenship Performance, which was found to have good criterion validity. The unifactorial scale also had superior convergent and divergent validity, and better internal factor structure, than the commonly‐used Job Dedication and Interpersonal Facilitation scales, developed by Van Scotter and Motowidlo (1996).