The role of R&D investment on firm's performance is not clear from a theoretical perspective. While the effort in R&D activities conducted internally helps firms to develop the ability to identify, assimilate and apply external knowledge successfully (Cohen and Levinthal, 1990), such activities...

The role of R&D investment on firm's performance is not clear from a theoretical perspective. While the effort in R&D activities conducted internally helps firms to develop the ability to identify, assimilate and apply external knowledge successfully (Cohen and Levinthal, 1990), such activities...