This study investigates the validity of two commonly used measures for
the success of information systems (rs): usage and user satisfaction
(us). A questionnaire survey among Dutch managers was used to assess t
he mutual relation between both measures and performance. The results
indicate that us is significantly related to performance (r=0.42). The
relation between usage and performance is not significant. A partial
correlation after correction for vs is not significant either. This st
udy provides empirical evidence for the popular assumption that us is
the most appropriate measure for Is success available. (C) 1998 Elsevi
er Science B.V. All rights reserved.