Old friends, new faces: Motivation research in the 1990s

This article reports the principal findings of over 200 studies of work motivation published between January 1990 and December 1997. We examined research relevant to seven traditional motivational theories (Motives and Needs, Expectancy Theory, Equity Theory, Goal-Setting, Cognitive Evaluation Theory, Work Design, and Reinforcement Theory) and three emerging topic areas (Creativity, Groups, and Culture). For each area, we summarize the research, identify trends and discuss issues that deserve further research attention. We conclude by examining trends in research in the field overall and considering the implications of these trends for the future role of motivation in organizational behavior research. (C) 1999 Elsevier Science Inc. An rights reserved