“…During the past 20 years, the body of literature on the economic appraisal of IS investments has grown enormously, and so has the number of economic measures investigated. For example, researchers have addressed productivity (Brynjolfsson & Hitt, 1996, 2000, capacity utilisation and product quality (Barua et al, 1995;Thatcher & Oliver, 2001;Thatcher & Pingry, 2004b, customer satisfaction (Devaraj & Kohli, 2000), production efficiency (Thatcher & Oliver, 2001) and productive efficiency (Chen & Lin, 2009;Lin, 2009), consumer welfare (Thatcher & Pingry, 2004a, b;Thatcher & Pingry, 2007), various profit ratios, such as 'Return on Assets' (Weill, 1992;Barua et al, 1995), and also market-oriented measures, such as Tobin's q (Bharadwaj et al, 1999;Brynjolfsson & Yang, 1999).…”