“…The first of these is the factors that explain why companies reveal or divulge information of a social nature (Belkaoui and Karpik, 1989;Pavelin, 2004, 2006;Fernández Sán-chez and Luna Sotorrío, 2004;Roberts, 1992;Stanwick and Stanwick, 2006), next is the motives behind spending on social performance such as donations, philanthropy, etc. (Adams and Hardwick, 1998;Amato and Amato, 2007;Millington, 2004, 2006;Navarro, 1988), and lastly, applicable in wider sense, a variety of principles, processes, policies, programmes and observable results relative to the company's relationship with society, which uses for its measurement social indices that may be provided by social rating institutions, such as KLD or EIRIS, or ad hoc indices drawn up by the researchers themselves (Beliveau et al, 1994;Hillman et al, 2001;Johnson and Greening, 1999;Mahoney and Thorne, 2005;Moore, 2001).…”