Synergy between R&D and advertising on shareholder value: Does firm size matter?

Using the hierarchical linear model, we examine whether R&D and advertising and their synergy influence firm value. We also investigate whether firm size moderates the market value effects of R&D, advertising, and the synergistic effect of R&D and advertising on firm value. We find that R&D and the synergy between R&D and advertising have significant positive effects on shareholder value. Moreover, we find that the effects of R&D and advertising are significantly higher in large firms than small firms, while the synergistic effect is significantly positive in small firms but not in large firms. These results offer important insight for executives on the implications of resource allocation on R&D and advertising expenditures to create firm value.