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بسیاری از والدین زمانی که فرزندشان ساعت‌ها بازی‌های ویدیویی انجام می‌دهند، احساس گناه می‌کنند و حتی نگران می‌شوند که انجام چنین کاری می‌تواند روی هوش فرزندان آنها تاثیر منفی داشته باشد. اما <anchor>تحقیق جدید</anchor> چیز دیگری می‌گوید.
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# **Video games: our study suggests they boost intelligence in children**

Published: May 12, 2022 9:20am EDT

Torkel Klingberg, _Karolinska Institutet_, Bruno Sauce, _Vrije Universiteit Amsterdam_

### Authors

1. [![](https://cdn.theconversation.com/static/tc/author/width170_default-bea415b3a0223821a698f6e3f6d5ab99.jpg)\
    Torkel Klingberg](/profiles/torkel-klingberg-1345276)

    Professor of Cognitive Neuroscience, Karolinska Institutet


2. [![](https://cdn.theconversation.com/static/tc/author/width170_default-bea415b3a0223821a698f6e3f6d5ab99.jpg)\
    Bruno Sauce](/profiles/bruno-sauce-1345278)

    Assistant Professor of Biological Psychology, Vrije Universiteit Amsterdam



### Disclosure statement

Torkel Klingberg receives funding from Medical Research Council in Sweden. He is the chief scientific officer at the company Cogmed.

Bruno Sauce received funding from the Strategic Research Area Neuroscience (StratNeuro) in Sweden.

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Many parents feel guilty when their children play video games for hours on end. Some even worry it could make their children less clever. And, indeed, that’s a topic scientists have clashed over for years.

In our new study, we investigated how video games affect the minds of children, interviewing and testing more than 5,000 children aged ten to 12. And the results, [published in Scientific Reports](https://www.nature.com/articles/s41598-022-11341-2), will be surprising to some.

Children were asked how many hours a day they spent on social media, watching videos or TV, and playing video games. The answer was: a lot of hours. On average, children spent two and a half hours a day watching online videos or TV programmes, half an hour socialising online, and one hour playing video games.

In total, that’s four hours a day for the average child and six hours for the top 25% – a large portion of a child’s free time. And other reports found that this [has increased dramatically](http://stakeholders.ofcom.org.uk/market-data-research/other/research-publications/childrens/children-parents-nov-15/) over the decades. Screens were around in previous generations, but now they truly define childhood.

Is that a bad thing? Well, it’s complicated. There could be [both benefits and drawbacks](https://www.publications.aap.org/pediatrics/article-split/138/5/e20162593/60349/Children-and-Adolescents-and-Digital-Media) for the developing minds of children. And these might depend on the outcome you are looking at. For our study, we were specifically interested in the effect of screen time on intelligence – the ability to learn effectively, think rationally, understand complex ideas, and adapt to new situations.

Intelligence is an important trait in our lives and [highly predictive](https://www.nature.com/articles/s41380-021-01027-y) of a child’s future income, happiness and longevity. In research, it’s often measured as performance on a wide range of cognitive tests. For our study, we created an intelligence index from five tasks: two on reading comprehension and vocabulary, one on attention and executive function (which includes working memory, flexible thinking and self-control), one assessing visual-spatial processing (such as rotating objects in your mind), and one on learning ability over multiple trials.

This is not the first time someone has studied the effect of screens on intelligence, but research, so far, has [produced](https://www.sciencedirect.com/science/article/abs/pii/S0273229717300011) [mixed](https://www.sciencedirect.com/science/article/abs/pii/S0022395621001473) [results](https://www.sciencedirect.com/science/article/abs/pii/S0747563220300662). So, what’s special this time? The novelty of our study is that we took genes and socioeconomic backgrounds into account. Only a few studies so far have considered socioeconomic status (household income, parental education and neighbourhood quality), and no study had accounted for genetic effects.

Genes matter because intelligence [is highly heritable](https://www.nature.com/articles/s41380-021-01027-y). If unaccounted for, these factors could mask the true effect of screen time on children’s intelligence. For example, children born with certain genes might be more prone to watch TV and, independently, have learning issues. The lottery of genetics is a [major confounder](https://www.nature.com/articles/s41562-020-0862-5) in any psychological process, but until recently this has been hard to account for in scientific studies due to the heavy costs of genome analysis and technological limitations.

The data we used for our study is part of a massive data collection effort in the US to better understand childhood development: the [Adolescent Brain and Cognitive Development](https://abcdstudy.org/) project. Our sample was representative of the US in terms of sex, race, ethnicity and socioeconomic status.

## The results

We found that when we first asked the child at age ten how much they played, both watching videos and socialising online were linked to below-average intelligence. Meanwhile, gaming wasn’t linked with intelligence at all. These results of screen time are mostly in line with previous research. But when we followed up at a later date, we found that gaming had a positive and meaningful effect on intelligence.

Gaming definitely won’t make your kid less clever.[Monkey Business Images/Shutterstock](https://www.shutterstock.com/image-photo/father-son-sitting-on-sofa-lounge-670592221)

While children who played more video games at ten years were on average no more intelligent than children who didn’t game, they showed the most gains in intelligence after two years, in both boys and girls. For example, a child who was in the top 17% in terms of hours spent gaming increased their IQ about 2.5 points more than the average child over two years.

This is evidence of a beneficial, causal effect of video games on intelligence. This result fits with [previous, smaller studies](https://psycnet.apa.org/doiLanding?doi=10.1037%2Fa0037556), where participants are randomly assigned to video-game playing or a control group. Our finding is also in line with parallel lines of studies suggesting that [cognitive abilities aren’t fixed](https://journals.sagepub.com/doi/full/10.1177/0956797618774253), but can be trained – including studies with [cognitive training intervention apps](https://www.nature.com/articles/s41562-021-01118-4).

What about the other two types of screen activities? Social media did not effect the change in intelligence after two years. The many hours of instagramming and messaging did not boost children’s intelligence, but it was not detrimental either. Finally, watching TV and online videos showed a positive effect in one of the analyses, but no effect when parental education was taken into account (as opposed to the broader factor of “socioeconomic status”). So this finding should be taken with a grain of salt. There is [some empirical support](https://www.jstor.org/stable/20053120?seq=1) that high-quality TV/video content, such as the programme Sesame Street, has a positive effect on children’s school performance and cognitive abilities. But those results are rare.

When thinking about the implications of these findings, it is important to keep in mind that there are many other psychological aspects that we didn’t look at, such as mental health, sleep quality and physical exercise. Our results should not be taken as a blanket recommendation for all parents to allow limitless gaming. But for those parents bothered by their children playing video games, you can now feel better knowing that it’s probably making them a tad smarter.

- [Children](/topics/children-10)
- [Child development](/topics/child-development-305)
- [Intelligence](/topics/intelligence-753)
- [IQ](/topics/iq-1716)
- [Cognitive science](/topics/cognitive-science-3028)
- [Video games](/topics/video-games-5423)
- [Cognition](/topics/cognition-36422)
- [Screens](/topics/screens-36450)

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