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Video gaming ‘can increase cognitive ability in children’

Above-average time spent on video games can lead to an increase in IQ over time, a new study reveals

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Children who spend an above-average time playing video games can increase their cognitive ability, a new study has revealed. 

Researchers at Karolinska Institutet in Sweden have studied how the screen habits of children correlate with how their cognitive abilities develop over time. 

While they found that watching television or being on social media had neither a positive or negative effect, video gaming increased their intelligence more than average. 

On average, the children spent 2.5 hours a day watching TV, half an hour on social media and one hour playing video games. 

The results showed that those who played more games than the average increased their intelligence between the two measurements by approximately 2.5 IQ points more than the average. No significant effect was observed, positive or negative, of TV-watching or social media.

Over 9,000 boys and girls from the United States took part in the study, which saw them perform an array of psychological tests aged nine or ten to determine their cognitive abilities. 

The children and their parents were also asked about how much time the children spent watching TV and videos, playing video games and engaging with social media.

Just over 5,000 of the children were followed up after two years, at which point they were asked to repeat the psychological tests. This enabled the researchers to study how the children’s performance on the tests varied from one testing session to the other, and to control for individual differences in the first test. 

They also controlled for genetic differences that could affect intelligence and differences that could be related to the parents’ educational background and income.

“We didn’t examine the effects of screen behaviour on physical activity, sleep, wellbeing or school performance, so we can’t say anything about that,” says Torkel Klingberg, professor of cognitive neuroscience at the Department of Neuroscience, Karolinska Institutet. 

“But our results support the claim that screen time generally doesn’t impair children’s cognitive abilities, and that playing video games can actually help boost intelligence. This is consistent with several experimental studies of video-game playing.”

The results are also in line with recent research showing that intelligence is not a constant, but a quality that is influenced by environmental factors.

“We’ll now be studying the effects of other environmental factors and how the cognitive effects relate to childhood brain development,” says Prof Klingberg.

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