Patterns of co-authorship among economics departments in the USA

Abstract

Given the steady increase in co-authored papers in economics journals, this paper reports a study of the patterns of co-authorship between US universities and colleges. A majority of institutions produce more co-authored than single-authored papers. Contacts with researchers from the same institution are still an important source of co-authored papers, even though slightly decreasing in frequency. The determinants of co-authorship outside the own institution are tested in a gravity model and it is found that distance and other geographical variables do not matter. However, the quality of co-authors' institutions, measured by rankings of institutions, has a significant impact on the number of co-authored papers in top economics journals.

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