TY - JOUR
T1 - Correlates of delay-discount rates
T2 - Evidence from Tsimane' Amerindians of the Bolivian rain forest
AU - Kirby, Kris N.
AU - Godoy, Ricardo
AU - Reyes-García, Victoria
AU - Byron, Elizabeth
AU - Apaza, Lilian
AU - Leonard, William
AU - Pérez, Eddy
AU - Vadez, Vincent
AU - Wilkie, David
N1 - Funding Information:
The Program of Cultural Anthropology of the National Science Foundation (SBR-9731240), the MacArthur Foundation, and the Conservation, Food and Health Foundation financed the collection of data for this study. Preparation of this article was also supported by a grant from the US National Institute of Mental Health Grant MH55262 to Williams College. We thank Richard Zeckhauser, John F. Kennedy School of Government, Harvard University, and Margo Wilson, Department of Psychology, McMaster University, for commenting on the pilot study for this research.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2002
Y1 - 2002
N2 - Delay-discount rates (or rates of time preference) are associated with rates of consumption and a variety of impulsive behaviors. Despite the importance of discounting, little is known about its covariates. We estimated discount rates for money and candy rewards in each of four quarters for 154 Tsimane' Amerindians (10-80 years of age). The Tsimane' are a horticultural and foraging society in the tropical rain forest of Bolivia. Discount rates increased with age, decreased with educational levels and literacy, and tended to decrease as recent income rose. Rates were not associated with wealth, nutritional status, or moderate drug use. There were low but reliable correlations between discount rates across quarters, suggesting that a person's discount rate is a somewhat stable characteristic that is also strongly influenced by situational factors.
AB - Delay-discount rates (or rates of time preference) are associated with rates of consumption and a variety of impulsive behaviors. Despite the importance of discounting, little is known about its covariates. We estimated discount rates for money and candy rewards in each of four quarters for 154 Tsimane' Amerindians (10-80 years of age). The Tsimane' are a horticultural and foraging society in the tropical rain forest of Bolivia. Discount rates increased with age, decreased with educational levels and literacy, and tended to decrease as recent income rose. Rates were not associated with wealth, nutritional status, or moderate drug use. There were low but reliable correlations between discount rates across quarters, suggesting that a person's discount rate is a somewhat stable characteristic that is also strongly influenced by situational factors.
KW - Choice behavior
KW - Delay of gratification
KW - Economics
KW - Impulsiveness
KW - Monetary rewards
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U2 - 10.1016/S0167-4870(02)00078-8
DO - 10.1016/S0167-4870(02)00078-8
M3 - Article
AN - SCOPUS:0036278584
SN - 0167-4870
VL - 23
SP - 291
EP - 316
JO - Journal of Economic Psychology
JF - Journal of Economic Psychology
IS - 3
ER -