Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
The Becker-Murphy model of rational addiction is tested with New Zealand credit card debt data. The results clearly favour the rational addiction model over the myopic, backward-looking model. The estimated short-run and long-run price elasticities are -0.58 and -2.32 respectively, and the estimated rate of time-preference is 6.7% per quarter.