The Effects of Top Management Team Faultline and Team Reflexivity on Decision Performance

Abstract：With the development of upper echelons theory，the team faultline of top management team（TMT）has gradually attracted academic attention. Based on the group decision theory，the author constructs a theoretical model to research the influence of TMT team faultline on decision performances by dividing team faultline into task- related faultline and socialcategory faultline. In the model，the author uses team reflexivity (dividing team reflexivity into task reflexivity and social reflexivity) as a moderating variable to study its moderating effect between the team faultline of TMT and decision- making performance. The research takes some TMT of enterprises in Shanghai，Beijing，Shandong，Zhejiang and other provinces as the research objects. The multiple regression analysis verifies that the task- related faultline is positively correlated with decision performance，both task reflexivity and social reflexivity can positively regulate this relation，and task reflexivity is more powerful than social reflexivity. The social-category faultline is negatively correlated with decision performance，both task reflexivity and social reflexivity are not significant in this process. The enterprises should，first，pay more attention to the diversified information provided by TMT faultline，enrich information channel，make the decisions to be more diversified，enhance the resilience of the decisions，and formulate a high-quality TMT；they should，second，formulate the effective group decision-making system，and try to avoid deviation to guarantee the realization of strategic targets；and third，they should pay more attention to enhancing cohesion.

Key words：TMT faultline；task reflexivity；social reflexivity；decision performance