Author Affiliation Index, finance journal ranking, and the pattern of authorship

In this paper we use a new method to rank finance journals and study the pattern of authorship/co-authorship across journals. Defined as the ratio of articles authored by faculty at the world's top 80 finance programs to the total number of articles by all authors, the Author Affiliation Index is a cost-effective and intuitively easy-to-understand approach to journal rankings. Forty-one finance journals are ranked according to this index. If properly constructed, the Author Affiliation Index provides an easy and credible way to supplement the existing journal ranking methods. Our ranking system reveals the journal-researcher clientele, and we find that collaboration (co-authoring) between faculty within elite programs exists only in top-tier and near-top-tier journals. Publications in lower-tier journals by researchers of elite programs are driven by their co-authors. Collaboration between faculty in elite and non-elite programs, however, is more prevalent than that within elite programs across all tiers of journals. Co-authorship among top 80 programs, nevertheless, is more common in top-tier journals, while co-authorship between top 80 and other programs is more dominant in lower-ranked journals.