What factors are associated with increasing co-authorship in the social sciences? A case study of Danish Economics and Political Science

We examine the relative strength of short-term citation counts, bibliometric measures such as journal impact factors, and journal rankings in terms of predicting long-run citations. Using a set of articles published in sixty of the highest reputation economics journals in 1994, we find that citations received over fairly short windows (between 1 and 2 years after publication) are much stronger predictors of long-run citation counts compared with journal impact factors or other journal rankings. Our results are robust to a series of robustness checks. These findings suggest department heads and tenure and promotion committees should place greater weight on short-term citations as opposed to article placement when making personnel decisions.