Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Consumption fluctuations in a simple 2-D addiction model are investigated. The behavioural equations of the model are suggested by a related `rational addiction' model of Becker and Murphy [2]. Our model generates erratic, seemingly unpredictable consumption patterns of the addicted persons. The occurence of chaos is proven by locating a so called horseshoe map in the phase space.