Knowledge spillovers in interdependent economies
نویسندگان
چکیده
In this paper, we improve upon Coe and Helpman’s model of international R&D spillovers, using seemingly unrelated regression (SUR) to include interdependence among national economies and allow for variations in coefficients across countries. We find that the impact of knowledge spillovers on national productivity is context dependent: positive in some cases while negative in others. From our interpretation, the results suggest that both beneficial and competitive effects from foreign knowledge spillovers are important. We view the most important contribution of our work as simply providing evidence of this variation, and suggesting directions for future research to explain this phenomenon. JEL classification: O39; O40; O57
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