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α: calibrated so average coauthorship-adjusted count equals average raw count
The effect of European integration on long-term growth of the EU-15 member states is studied by means of panel data methods. The length of EU membership is found to have a significant positive effect on economic growth, which is relatively higher for poorer countries. While previous empirical studies tend not to find positive growth effects of regional integration, the present study suggests an asymmetric, convergence-stimulating impact of EU membership on long-term growth.