Depressive patients are more impulsive and inconsistent in intertemporal   choice behavior for monetary gain and loss than healthy subjects- an analysis   based on Tsallis' statistics

Taiki Takahashi (1); Hidemi Oono (2); Takeshi Inoue (3); Shuken Boku; (3); Yuki Kako (3); Yuji Kitaichi (3); Ichiro Kusumi (3); Takuya Masui (3),; Shin Nakagawa (3); Katsuji Suzuki (3); Teruaki Tanaka (3); Tsukasa Koyama; (3); and Mark H. B. Radford (4) ((1) Direct all correspondence to Taiki; Takahashi; Unit of Cognitive; Behavioral Sciences Department of Life; Sciences; School of Arts; Sciences; The University of Tokyo; Komaba,; (taikitakahashi@gmail.com); (2) Department of Behavioral Science; Hokkaido; University; Sapporo; Japan; (3) Department of Psychiatry; Graduate School of; Medicine; Hokkaido University; Sapporo; (4) Symbiosis Group Limited; Milton,; Australia; and Department of Behavioral Science; Hokkaido University,; Sapporo; Japan)

arXiv:1111.6493·q-bio.NC·December 4, 2012·78 cites

Depressive patients are more impulsive and inconsistent in intertemporal choice behavior for monetary gain and loss than healthy subjects- an analysis based on Tsallis' statistics

Taiki Takahashi (1), Hidemi Oono (2), Takeshi Inoue (3), Shuken Boku, (3), Yuki Kako (3), Yuji Kitaichi (3), Ichiro Kusumi (3), Takuya Masui (3),, Shin Nakagawa (3), Katsuji Suzuki (3), Teruaki Tanaka (3), Tsukasa Koyama, (3)

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TL;DR

This study reveals that depressive patients exhibit greater impulsivity and inconsistency in intertemporal monetary decisions for gains and losses, using Tsallis' statistics to quantify these behaviors and linking them to serotonergic neural impairments.

Contribution

It introduces the application of Tsallis' q-exponential discount function to assess decision-making impairments in depression, highlighting neuroeconomic implications.

Findings

01

Depressive patients are more impulsive in intertemporal choices.

02

Depressive patients show greater time-inconsistency in decision-making.

03

The q-exponential discount function effectively measures decision impairments.

Abstract

Depression has been associated with impaired neural processing of reward and punishment. However, to date, little is known regarding the relationship between depression and intertemporal choice for gain and loss. We compared impulsivity and inconsistency in intertemporal choice for monetary gain and loss (quantified with parameters in the q-exponential discount function based on Tsallis' statistics) between depressive patients and healthy control subjects. This examination is potentially important for advances in neuroeconomics of intertemporal choice, because depression is associated with reduced serotonergic activities in the brain. We observed that depressive patients were more impulsive and time-inconsistent in intertemporal choice action for gain and loss, in comparison to healthy controls. The usefulness of the q-exponential discount function for assessing the impaired…

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Taxonomy

TopicsDecision-Making and Behavioral Economics · Forecasting Techniques and Applications · Economic and Environmental Valuation