“…suggests that co-ops can be formidable competitors to IOFs~investor-owned firms!, other research building on agency and game theory suggests that co-ops' traditional principles undermine optimal resources allocation and investment policies~Vitaliano, 1983! as well as the stability of coalitions of various groups in the cooperative~Sexton, 1986;Staatz, 1983!+ In an effort to reconcile these conflicting perspectives, a growing research stream proposes a variety of cooperatives models~Barton, 1989;Cook, 1995Cook, , 1997Kyriakopoulos, 2000;Nilsson, 1998;Van Dijk, Kyriakopoulos, & Nilsson, 1997!, capturing the emergence of a new model for cooperatives variously called new generation, re-engineered, or proportional co-ops+ In addition to changes in cooperative structure, cooperative firms are reorganized to bolster an entrepreneurial and innovative management and culture~Cook, 1995; Kyriakopoulos, 2000!+ Changes in cooperative structure and culture are suggested to facilitate market-oriented strategies~Meulenberg, 1996! as a response to increasing and global competition and changing customer preferences+ Positioned in the cooperative models research stream, this study seeks to shed light on the impact of two key cooperative organizational features-cooperative structure and cooperative firm culture-on the market orientation and performance of cooperative firms by addressing the following gaps associated with cooperative research+ First, while re-engineered cooperatives have been discussed extensively, they have not been clearly distinguished from traditional cooperatives by unambiguous and measurable variables+ In this study we differentiate these two classes of cooperatives, traditional and re-engineered on the basis of specific structural factors related to the three basic principles of cooperative structure, user-owned, user-controlled and user-benefit+ Second, features of the cooperative firm, such as entrepreneurial culture and leadership, though they are suggested to explain firm success, in general,~e+g+, Deshpandé, Farley, & Webster, 1993;Moorman, 1995!, have been overlooked in the cooperative studies+ Third, our study also seeks to extend prior empirical research on the performance of cooperatives by introducing market orientation, which is a familiar concept in the business science literature~e+g+, Deshpandé, 1999;Porter, 1980!, as an outcome variable of cooperative structure and culture+ Studies of cooperative performance in the past have relied on a limited number of financial indicators, such as balance sheet ratios~e+g+, Gentzoglanis, 1997;Hind, 1994;Lerman & Parliament, 1990!+ However, in this study we introduce an overall evaluation of cooperative performance as proposed by Deshpandé et al+~1993!+…”