“…Yet, empirical evidence supporting the positive performance hypotheses is surprisingly scant. While some studies have found support for the hypothesis (Chang & Choi, 1988;Keister, 1998;Khanna & Rivkin, 2001), other studies offer only mixed support and many find a negative effect and see only a dark side (Scharfstein & Stein, 2000). Indeed, much recent business group research chronicles the high costs and negative performance outcomes of group affiliation (Bertrand, Mehta, & Mullainathan, 2002;Lu & Yao, 2006;Morck, Wolfenzon, & Yeung, 2005).…”