“…Following prior research (Davidson et al, 2005;Baxter et al, 2009;Felo, Krishnamurthy, & Solieri, 2003;Xie et al, 2003), the current study measures audit committee size simply by the numbers of audit committee members. Again following prior studies (Chtourou & Bedard, 2001;Jeong & Rho, 2004;Davidson et al, 2005;Chen et al, 2005;Carcello et al, 2006;Piot & Janin, 2007;Baxter & Cotter, 2009;Chang & Sun, 2010), the current study uses Big4 as a control variable which takes the value of 1 if the firm is audited by one of the "big four" auditing firms, otherwise 0. The study controls for the effects of large block holders and measures ConcOwner as the percentage of shares held by the largest three substantial shareholders with more than 5 percent of the shares.…”