Cognitive Reserve: What It Is and Whether Games Build It

Cognitive reserve is the brain’s ability to keep working well despite damage or aging, and it is the idea behind nearly every claim that puzzles, games, and learning protect your mind. The concept is real and well studied. What people do with it is often a stretch. This article explains where the idea came from, what the research on games shows, and where the honest line sits between “associated with” and “proven to help.”

If you or someone you love has concerns about memory or thinking, talk to a doctor. This is background reading, not advice.

What is cognitive reserve, and where did the idea come from?

The idea began with a puzzle in autopsy studies. In a 1988 paper, Robert Katzman and colleagues described a small group of nursing home residents whose brains were full of Alzheimer’s plaques at autopsy but who had shown little or no cognitive impairment while alive. Their brains had the damage. Their thinking had not failed. Something was compensating.

Yaakov Stern, a neuropsychologist at Columbia University, developed the explanation that is now standard. Where Katzman had pointed to bigger brains, Stern proposed that something about how people’s minds work, shaped by education, occupation, and lifelong mental activity, lets some of them cope with more damage before symptoms appear. He called it cognitive reserve.

Two points from that work matter for the rest of this article.

First, reserve is not a bank account of extra brain cells. It is closer to having more routes through a city. When one road closes, traffic still moves. Second, the strongest predictors in the early studies were years of education and the complexity of a person’s work, measured decades before old age. Reserve, on that evidence, is built slowly and early. Whether it can also be built late, by taking up new activities in retirement, is the live question.

Do board games build cognitive reserve?

The direct answer is that games are associated with better cognitive aging in several long-running studies, and nobody has yet shown that they cause it. Here is what the main studies found.

The Lothian Birth Cohort in Scotland is one of the most useful, because its participants took an intelligence test at age 11, which gives researchers a baseline most studies lack. One 2019 analysis, covering more than 1,000 people tested at 70 and again every three years to 79, found that those who played more non-digital games like cards, board games, chess, bingo, and crosswords scored better on memory and thinking tests in their 70s, and that people who increased their game playing over that decade showed less decline, particularly in memory and thinking speed. The pattern held after adjusting for childhood intelligence, education, socioeconomic status, and activity levels, though the researchers described the association as small.

A French cohort study known as PAQUID followed about 3,700 older adults for 20 years and reported in 2013 that board game players had a roughly 15 percent lower risk of developing dementia than non-players after adjusting for age, sex, education, and a few health factors. That difference shrank and was no longer statistically significant once baseline cognition and depression were accounted for.

A 2003 paper in the New England Journal of Medicine, led by Joe Verghese and based on the Bronx Aging Study, looked at leisure activities in 469 people aged 75 and older and found that frequent participation in cognitively demanding activities, including board games, playing a musical instrument, reading, and dancing, was associated with a reduced risk of dementia.

Three studies, three countries, the same direction. That is worth something. It is not the same as a trial.

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Why can’t researchers say games prevent decline?

Because of a problem called reverse causation, and it is simple once you see it.

Dementia develops slowly, often over many years before diagnosis. A person in the earliest, invisible stage may find games harder and quietly stop playing. If you then survey people and find that non-players decline more often, you cannot tell whether games protected the players or whether early disease pushed the non-players away from the table.

Researchers try to handle this by using childhood test scores as a baseline, as the Lothian team did, or by excluding anyone diagnosed in the first years of a study. That strengthens the case without closing it. The honest summary from most of the field is that regular mental and social engagement is associated with better cognitive aging, and that board games are one good form of that engagement. We go further into that evidence in what the research says about board games and dementia.

There is a second caution. “Brain training” apps once made strong claims about reserve, and in 2014 a group of scientists convened by the Stanford Center on Longevity published a consensus statement saying the evidence did not support claims that such products reduce or reverse cognitive decline. Gains on the trained task rarely transferred to daily life. Board games are not brain-training apps, but the lesson applies: be suspicious of anyone selling reserve by the box.

What might games be doing, if they help?

Nobody knows which part of a game does the work, and the research suggests it may be the combination. Here is what a single round of a common game asks of a brain, compared with a crossword.

The last row may matter most. The U.S. Surgeon General’s 2023 advisory associated chronic loneliness or isolation with roughly 50 percent higher dementia risk in older adults. If social isolation is a risk factor and a weekly card game is one of the few activities older adults reliably keep up, then part of what looks like a games effect may be a connection effect. Researchers have not separated them, and for practical purposes you may not need to. A table that is both demanding and social covers both.

What does this mean for what you actually do?

A reasonable reading of the evidence suggests a few things, none of them dramatic.

1. Play regularly, not occasionally. Every study that found an association measured frequency. A game a week is the realistic floor.
2. Prefer games that change. Novelty seems to matter in reserve research. A deck of cards offers endless new hands; a memorized puzzle does not. Rotate games when you can.
3. Prefer games with people. It doubles up the mechanisms and it is the kind of play that sticks for decades. Social fitness explains why the relationship side deserves to be treated as training.
4. Start earlier than you think. The strongest reserve predictors are built over a lifetime. A game night at 45 is not too early.
5. Don’t stop when it gets harder. If play becomes frustrating, adapt the game rather than quitting. Large-print cards, simpler rules, a slower pace. The point is to stay at the table.
6. Keep perspective. Games are one input alongside sleep, movement, blood pressure, hearing, and the rest. If you notice changes in memory or thinking, see a doctor. A game is not a screening tool or a treatment.

What we take from all of this at the Ludarium is modest and firm. The research supports a weekly, in-person, mentally engaging game as a habit associated with aging well. It does not support promising anyone it will save their mind, and we will not. The game is the reason. The people are the point.

FAQ

What is cognitive reserve in simple terms?

Cognitive reserve is the brain’s capacity to keep functioning normally despite age-related changes or disease, thought to be built by education, complex work, and lifelong mental and social activity.

Do board games increase cognitive reserve?

Long-term studies have associated regular board and card game play with better memory and thinking in later life and with lower dementia risk, but they are observational and cannot prove games cause the benefit.

What activities are linked to cognitive reserve?

Education, mentally complex occupations, reading, playing music, learning languages, social engagement, and games such as cards, chess, and board games have all been associated with it in research.

Is it too late to build cognitive reserve after 70?

The Lothian cohort found that people who increased their game playing in their 70s showed less decline over the decade, which suggests activity in later life still matters. The effect was small and the researchers did not claim cause.

Keep your mind at the table

The Ludarium is building a game lounge in Indianapolis where a weekly game with the same people is easy to keep. If you want careful, sourced writing on play and the aging brain, subscribe to the Ludarium newsletter. New pieces on play and longevity go to subscribers first.