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Stress affects older adults more than young adults
Date:10/28/2008

Life can be stressful, whether you're an individual watching the stock market crash or a commuter stuck in traffic. A new study, forthcoming in the journal Psychological Science, examines how stress affects decision-making and finds that older adults alter their behavior more than young adults when under stress particularly in situations involving risk.

"People haven't looked at how stress affects decision making, even though so many of our decisions are made under stress," explained Mara Mather of USC Davis School of Gerontology, lead author of the study. "There's very little information about this whole topic, and, when you get to age differences, there's even less."

Mather and her colleagues Marissa Gorlick, of the USC Emotion and Cognition Lab, and Nichole Kryla-Lighthall, a USC doctoral student, exposed young adults (18 to 33) and older adults (65 to 89) to a stressful event, in this case, holding a hand in ice-cold water for three minutes.

Participants were then asked to play a driving game correlating to a real-life situation in which taking a small amount of risk is common: whether to go for it on a yellow light. Participants started at a green light, and points were awarded for every second spent driving during a yellow, but lost if the light turned red while driving. The length of time for the yellow lights was determined randomly.

In other words, Mather explained, participants had to decide to take some risk driving during a yellow light to score any points at all.

"This is the way life is, quite often. To make more money in your investments, you have to take risk. To end up dating someone, you have to take the risk of going up and saying hello," Mather said. "When there's a potential payoff, most of the time you have to take some risk."

In the control group, which was not exposed to ice-cold water, older adults were actually better drivers than younger adults, the researchers found, sc
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Contact: Suzanne Wu
suzanne.wu@usc.edu
213-740-0252
University of Southern California
Source:Eurekalert

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