Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
With firm profitability data for a cross-section of geographic markets, it is possible to determine the relative importance of firm and market effects on profitability. Analysis of variance from a panel of multibank holding companies in Texas suggests that firm effects are more important than market effects in determining profitability and that the magnitudes of the effects vary over time. Copyright 1991 by Blackwell Publishing Ltd.