Abstract
Anomalies in intertemporal choice (e.g. hyperbolic discounting, subadditive discounting, a sign effect, a magnitude effect, and a delay-speedup asymmetry) have been investigated in neuroeconomics and behavioral neuroeconomics. In this study we propose a “tempospect” theory of intertemporal choice which can account for these anomalies in intertemporal choice. The key features of the present theory are: 1) decision over time is made with psychological time; and 2) psychological time is determined by a change in delay until receipt (i.e., positive or negative time-interval between options); 3) psychological time is less sensitive to a decrease in delay in comparison to an increase in delay; and 4) psychological time is influenced by the sign and magnitude of the delayed outcomes. Implications of the present theory for neuroeconomics are discussed.
Highlights
People tend to devalue the subjective value of outcomes as delay until its receipt increases, which is referred to as temporal discounting
Since its introduction by Samuelson (1937), an exponential discounting model for intertemporal choice has dominated in economic theory
Later empirical evidence suggests that several anomalies exist in human and animal intertemporal choice behavior (Thaler, 1981; Loewenstein & Prelec, 1992; Frederick et al, 2002)
Summary
Anomalies in intertemporal choice (e.g. hyperbolic discounting, subadditive discounting, a sign effect, a magnitude effect, and a delay-speedup asymmetry) have been investigated in neuroeconomics and behavioral neuroeconomics. In this study we propose a “tempospect” theory of intertemporal choice which can account for these anomalies in intertemporal choice. The key features of the present theory are: 1) decision over time is made with psychological time; and 2) psychological time is determined by a change in delay until receipt (i.e., positive or negative time-interval between options); 3) psychological time is less sensitive to a decrease in delay in comparison to an increase in delay; and 4) psychological time is influenced by the sign and magnitude of the delayed outcomes. Implications of the present theory for neuroeconomics are discussed
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