Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
By adapting the statistical framework suggested by Székely and Rizzo (2004) and considering the convergence of income distributions instead of aggregate (e.g., average) income, we exploit the scale-independence property of proper inequality metrics to evaluate not only the total but also the inequality-affecting (shape-influenced) convergence of income distributions. We illustrate the application using Monte Carlo experiments and characterizing the convergence of net equivalized income distributions among European Union member states.