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  Risk Taking for Potential Reward Decreases across the Lifespan

Rutledge, R., Smittenaar, P., Zeidman, P., Brown, H., Adams, R., Lindenberger, U., et al. (2016). Risk Taking for Potential Reward Decreases across the Lifespan. Current Biology, 26(12), 1634-1639. doi:10.1016/j.cub.2016.05.017.

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Rutledge, RB, Author
Smittenaar , P, Author
Zeidman, P, Author
Brown, HR, Author
Adams, RA, Author
Lindenberger, U, Author
Dayan, P1, Author           
Dolan, RJ, Author
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1External Organizations, ou_persistent22              

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 Abstract: The extent to which aging affects decision-making is controversial. Given the critical financial decisions that older adults face (e.g., managing retirement funds), changes in risk preferences are of particular importance [1]. Although some studies have found that older individuals are more risk averse than younger ones [2, 3, 4], there are also conflicting results, and a recent meta-analysis found no evidence for a consistent change in risk taking across the lifespan [5]. There has as yet been little examination of one potential substrate for age-related changes in decision-making, namely age-related decline in dopamine, a neuromodulator associated with risk-taking behavior. Here, we characterized choice preferences in a smartphone-based experiment (n = 25,189) in which participants chose between safe and risky options. The number of risky options chosen in trials with potential gains but not potential losses decreased gradually over the lifespan, a finding with potentially important economic consequences for an aging population. Using a novel approach-avoidance computational model, we found that a Pavlovian attraction to potential reward declined with age. This Pavlovian bias has been linked to dopamine, suggesting that age-related decline in this neuromodulator could lead to the observed decrease in risk taking.

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 Dates: 2016-06
 Publication Status: Issued
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 Identifiers: DOI: 10.1016/j.cub.2016.05.017
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Title: Current Biology
  Other : Curr. Biol.
Source Genre: Journal
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Publ. Info: London, UK : Cell Press
Pages: - Volume / Issue: 26 (12) Sequence Number: - Start / End Page: 1634 - 1639 Identifier: ISSN: 0960-9822
CoNE: https://pure.mpg.de/cone/journals/resource/954925579107