MONDAY, Feb. 4 (HealthDay News) -- When older people's mood improves, so does their brain power, new research suggests.
Being in a good mood appears to enhance decision-making skills and working memory among older adults, according to the study published in the current issue of the journal Cognition and Emotion.
The study authors suggested that even something as simple as a small bag of candy can help older people perform better on so-called "cognitive" -- or thinking skill -- tests.
"There has been lots of research showing that younger adults are more creative and cognitively flexible when they are in a good mood. But because of the [mental] declines that come with aging, we weren't sure that a good mood would be able to help older adults," study co-author Ellen Peters, professor of psychology at Ohio State University, said in a university news release.
"So these results are good news," she added. "There are ways for older adults to overcome some of the [mental] declines that come with aging"
In conducting the study, the researchers divided 46 adults ranging in age from 63 to 85 years into two equal groups. Those included in the first group were given a thank you note and two small bags of candy tied with a red ribbon to boost their mood when they arrived for the thinking skill tests. Those in the other group did not receive either a thank you note or candy.
During the experiment, the participants who received the candy used computers that had a sky-blue background screen with smiling suns on it. Meanwhile, those who didn't receive the candy used computers with neutral round images but no smiling faces on the sky-blue background.
The participants were given $3 in quarters and eight virtual decks of cards featuring a different pattern during the decision-making tasks. Four of the decks were considered "gain" decks. If participants chose a card from one of these decks, 75 percent of the t
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