“…As for the factors affecting growth, a variety of variables have been used by many surveys; investment activity (net fixed assets) is considered to be a source of motive power for firms, increasing longrun growth and employment (Chirinko, 1993;Voulgaris et al, 2005) and affect positively cash flow and profitability (Agiomirgiannakis et al, 2006;Eriotis et al, 2002). Innovative activity through the expenses for research and development (R&D), or by acquiring of know-how (intellectual property rights), seems also to affect growth and economic performance [Autio and Parhankangas, (1998), p.120;Delapierre et al, (1998), p.990;Ferguson and Olofsson, (2004), p.5;Kafouros, (2005), p.492;Makris, 2007Makris, , 2008. Furthermore, firm's size and age seem to contribute to economic growth, either positively (Agiomirgiannakis et al, 2006;Voulgaris et al, 2005), or negatively [Bartjokas, 2001;Giudici and Paleari, 2000;Voudouris et al, (2000), p.669].…”