Study shows video games actually boost brains

Video games might boost brain

For years, video games got a bad rap for harming mental health, but CU Boulder scientists are turning that idea on its head. Their new study shows small yet significant cognitive benefits from regular gameplay, challenging long-held assumptions.

The research focused on adults aged 28 to 49 and tracked cognitive skills over time, rather than relying on single-point studies. This approach makes their findings stronger, showing that gaming can positively influence the mind in ways similar to board games.

Study tracked hundreds of adults

CU Boulder’s CATSLife project included 1,241 participants, tracking them across years. Researchers measured processing speed, working memory, and spatial reasoning to see how gameplay affected the brain.

Some played video games regularly, others didn’t, letting scientists compare outcomes directly. Using twins and siblings in the study helped isolate gaming effects from natural cognitive differences.

By adjusting for adolescent IQ, age, sex, and education, the study gave a clearer picture of how gameplay itself could shape certain mental skills.

Spatial reasoning sees the biggest gain

Of the three areas studied, spatial reasoning showed the most consistent improvement from gaming. Action+ games, like shooters and adventure titles, seemed particularly beneficial for these skills.

Processing speed also improved in some tests, though working memory didn’t show notable gains. Researchers caution that this might be due to only using one test for working memory, meaning future studies could reveal more.

Gaming genres make a difference

Not all video games affect the brain equally. Action+ games were tied to better spatial reasoning, while Puzzle+ games, like life simulations and brain teasers, helped with processing speed. Other genres showed minor or mixed effects, showing that what you play can shape which skills improve.

Interestingly, in some comparisons, weak negative associations emerged (e.g., slight decrements in certain processing speed or spatial reasoning tests), though these were very small and should be interpreted with caution.

Reverse causation considered

A key question: are smarter people drawn to gaming, or does gaming make people smarter? The study addressed this “reverse causation” by factoring in adolescent IQ scores. This helped separate natural cognitive ability from the effects of gameplay over time.

By doing this, researchers could better pinpoint small improvements in skills like spatial reasoning and processing speed that likely came from gaming itself, not just from naturally higher IQ individuals choosing to play more often.

Sociodemographics matter

Men and younger adults were more likely to play Action+ games, while women and older adults leaned toward Puzzle+ titles. Accounting for these differences helped researchers determine which improvements were truly linked to gameplay versus social or demographic trends.

These patterns show that cognitive benefits might vary depending on who plays which games.

Games as cognitive tools

Video games can be an accessible way to exercise the brain. Unlike sports, they don’t require physical ability, and they appeal to billions worldwide.

This widespread reach suggests games might be considered as one supplement to traditional mental exercises (like puzzles or memory training), though they should not be viewed as a complete replacement given the modest effect sizes.

Longitudinal design is key

Most past studies were cross-sectional, capturing only a single point in time. CU Boulder’s longitudinal approach tracked participants over the years, providing a more reliable look at how gaming impacts cognitive development as people age.

Repeated testing helps identify true trends and reduces bias from temporary factors, offering a much clearer picture of video games’ small but real benefits.

Processing speed improvements

Processing speed showed gains in certain tests, even after adjusting for adolescent IQ. This means that gameplay might help players react faster and process information more efficiently.

The improvements were modest yet statistically significant, indicating that small cognitive benefits from gaming may accumulate, but they should be interpreted cautiously.

Puzzle+ games help thought skills

Puzzle+ games, like life simulations and logic challenges, showed benefits for processing speed. These games often demand planning and multitasking, helping players exercise mental flexibility.

Such subtle improvements highlight how even non-action games can engage the brain in meaningful ways, giving cognitive benefits beyond entertainment.

Working memory results are mixed

Working memory didn’t show clear gains, likely because only one test measured this skill. Researchers note that more varied tests in future studies could reveal effects not captured here.

This emphasizes that cognitive benefits may be specific to certain mental skills, and a lack of effect in one area doesn’t negate overall positive results.

Impact remains small

Even where benefits appeared, effects were modest. This suggests that gaming should complement other cognitive activities rather than replace them entirely.

Small improvements, however, are meaningful when applied across millions of players and over years of gameplay, showing potential for long-term brain maintenance.

Negative effects still possible

As a caution, excessive gaming (especially over long, unmoderated hours) may incite stress, disrupted routines, or other negative outcomes, benefits are likely maximized under moderation.

Researchers stress moderation: small, mindful gaming sessions seem to provide benefits, but overindulgence can tip the scale toward harm.

Future data collection ongoing

CU Boulder is collecting more CATSLife data, tracking gameplay and cognitive outcomes over the next five to six years. This will clarify how long-term gaming affects the brain.

By including newer games and updated surveys, researchers hope to identify patterns in skill improvements and whether different genres continue to offer cognitive advantages.

Gaming research still evolving

While these findings are promising, they need replication. Researchers hope other studies will explore similar connections to confirm the small benefits seen here.

The study also encourages exploring other activities alongside gaming to understand which exercises best support cognitive health across adulthood.

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Gaming has benefits too

Playing video games appears to give modest cognitive boosts, especially for spatial reasoning and processing speed. 

The improvements are small but meaningful, showing that gaming isn’t just entertainment; it can engage the mind in ways similar to traditional cognitive exercises. CU Boulder researchers will continue tracking participants to see how gameplay and different genres influence the brain over time.

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This slideshow was made with AI assistance and human editing.