Good mood boosts brain power

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 suggest that even something as simple as a small bag of candy can help older people perform better on ‘cognitive’ – or thinking skill – tests.

Study co-author, Ellen Peters, professor of psychology at Ohio State University, said in a released statement: “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 ageing, we weren’t sure that a good mood would be able to help older adults.

“So these results are good news. There are ways for older adults to overcome some of the [mental] declines that come with ageing,” Ms Peters said.

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 skyblue 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 skyblue background.

The participants were given $3 in quarters and eight virtual decks of cards featuring a different pattern during the decisionmaking tasks.

Four of the decks were considered ‘gain’ decks. If participants chose a card from one of these decks, 75% of the time they won a quarter and 25% of the time they didn’t win or lose. The remaining four decks were considered ‘loss’ decks. If someone chose a card from a ‘loss’ deck, they lost a quarter 75% of the time, the study authors explained.

The participants could also accept or reject the top card of the deck that was offered to them. Their goal was to win as much money as they could. The participants were not told what the card values were. Instead, they had to learn through trial and error.

The researchers noted they were looking to see how quickly the participants would learn which decks won them money and which ones didn’t.

The study revealed the older adults whose spirits were lifted with a thank you note and candy performed much better at the decision making test than the other participants.