Product innovation and educational diversity in top and middle management teams

The effects of diversity in management teams on firm innovation have become an important topic in strategic management. With a few exceptions, however, the literature has focused on diversity in Top Management Teams (TMTs), while the role of lower management levels, particularly in Middle Management Teams (MMTs), has usually been neglected. In this paper, we intend to fill this gap by explicitly differentiating between the effects of diversity in TMTs and MMTs. By matching various firm-level and individual-level datasets, we compiled a linked employer-employee panel dataset for Sweden for the period 2004-2012. Focusing on measures of educational diversity, we find that the effects differ considerably between MMTs and TMTs. TMTs diversity determines whether firms engage in innovation activities at all (strategic decision), while MMTs diversity affects the actual outcome of innovation processes (successful product innovations and their degree of market novelty).