A neuroeconomic theory of rational addiction and nonlinear time-perception

TL;DR

This paper develops a neuroeconomic model linking nonlinear time perception to rational addiction, showing how impulsivity and rationality are influenced by neurobiological factors and discounting behaviors.

Contribution

It introduces a novel theoretical framework connecting hyperbolic discounting, nonlinear time perception, and neuroeconomic conditions for rational addiction.

Findings

Time perception relates to irrationality in discounting behaviors.

Addictive drugs may increase impulsivity without affecting rationality.

The model links neurobiological factors to economic decision-making.

Abstract

Neuroeconomic conditions for "rational addiction" (Becker and Murphy, 1988) have been unknown. This paper derived the conditions for "rational addiction" by utilizing a nonlinear time-perception theory of "hyperbolic" discounting, which is mathematically equivalent to the q-exponential intertemporal choice model based on Tsallis' statistics. It is shown that (i) Arrow-Pratt measure for temporal cognition corresponds to the degree of irrationality (i.e., Prelec's "decreasing impatience" parameter of temporal discounting) and (ii) rationality in addicts is controlled by a nondimensionalization parameter of the logarithmic time-perception function. Furthermore, the present theory illustrates the possibility that addictive drugs increase impulsivity via dopaminergic neuroadaptation without increasing irrationality. Future directions in the application of the model to studies in neuroeconomics are discussed.