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Contribution of income to the delay or probability discounting of monetary rewards
Authors
César Alexis Corona Palma
Universidad Nacional Autónoma de México
Raúl Ávila Santibáñez
Universidad Nacional Autónoma de México
Chyntia Jaramy Díaz Cigales
Universidad Nacional Autónoma de México
The effect of the subjects’ income on delay –and probability– discounting rates was assessed. Participants were 40 high-income and 40 low-income young adults who were exposed to a delay discounting or a probability-discounting task with different reward amounts, using an adjusting amount procedure. Discounting rates and areas under the curve were calculated for both groups. Globally, high-income participants discounted less delayed rewards than low-income participants. In probability discounting, when the magnitude of the probabilistic reward was relatively small, highincome participants discounted less the reward; as the magnitude of the probabilistic reward increased, there were no differences between the discounting rates of participants of both income levels.
Keywords:
delay discounting, probability discounting, income, area under the curve
Corona Palma, C. A., Ávila Santibáñez, R., & Díaz Cigales, C. J. (2018). Contribution of income to the delay or probability discounting of monetary rewards. Revista De Psicología, 27(1), pp. 1–16. https://doi.org/10.5354/0719-0581.2018.50740