From HealthNewsDigest.com

Children's Health
Children Learn to Take Turns for Mutual Gain
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Jun 21, 2016 - 9:05:38 AM

(HealthNewsDigeswt.com) - It takes children until they are about 5 years old to learn to take turns with others, while the social skill seems to elude chimpanzees, according to new findings published inPsychological Science, a journal of the Association for Psychological Science.

The findings show that 5-year-old children adopted a turn-taking strategy more effectively than their younger counterparts, suggesting that the skill emerges as children's cognitive abilities mature.

"Although chimpanzees and young children may be able to engage in reciprocal interactions that are driven by past events - ‘She was nice to me, so I will be nice to her now' - this study shows that they are not able of prospective turn-taking and understanding the long-term benefits of taking turns," says lead researcher Alicia Melis of Warwick Business School in the UK. "This suggests that more complex planning and reasoning skills are necessary for turn-taking."

The ability to take turns to ensure future benefits is a fundamental and strategic social behavior that expands the range of cooperative behaviors humans exhibit. According to Melis, it allows individuals to cooperate even when they have conflicting interests or would otherwise compete with each other, such as when parents take turns picking children up at school or when drivers take turns merging into a single lane on the highway.

To investigate children's and chimpanzees' turn-taking abilities, Melis and colleagues devised an experiment involving rewards placed on specially designed trays. Each pair of participants had to work together to pull the trays so that a reward - stickers for children, fruit for chimpanzees - would be reachable. Importantly, pulling one tray resulted in losing the reward on the other tray.

The researchers tested a total of 96 preschoolers, half of whom were 3.5 years old and half of whom were 5 years old. Each age-matched pair completed 24 turn-taking trials. They also tested 12 chimpanzees, each of whom completed 48 trials with one partner and 48 trials with another partner.

The results showed that the 5-year-old children managed to access a reward on 99.5% of the trials, while the 3.5 year-olds were successful on only 62.3% of the trials. The 5 year-olds also took turns more often than the 3.5 year-olds and their turn-taking increased as they completed more trials.

The data showed that although some of the younger pairs eventually developed a turn-taking strategy, it took them awhile to do so - some of the 3.5 year-olds never resolved their conflict of interest.

"Although young children are encouraged to take turns across many different situations, including in interactions with adults and when sharing resources with other children, our findings show that it was only from age 5 when the children were able to spontaneously take turns to solve a conflict of interests," Melis explains.

The chimpanzee pairs had a success rate similar to that of the younger children, accessing a reward about 64% of the time. All of the chimpanzee pairs were able to cooperate for at least several trials in a row, but none of the pairs adopted a consistent turn-taking strategy.

These findings suggest that foregoing an immediate benefit to accommodate the desires of another individual is a cooperative strategy that may develop over time in humans but not in chimpanzees.

"The fact that these skills in humans do not develop until age 5 suggests that turn taking requires sophisticated cognitive skills that may be lacking in chimpanzees," the researchers write in conclusion.

According to Melis, future work investigating the specific cognitive components underlying turn-taking can tease apart the relative importance of skills like the ability to think ahead and imagine future interactions, the ability to plan, and the ability to reason about fairness and mutual gain.

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