Strategy
Do word games actually help your brain? An honest look
Puzzle apps love to promise sharper minds. The evidence is more interesting, and more limited, than the advertising suggests.
6 min read
We make a word game, so treat this with appropriate scepticism — which is exactly why we'd rather describe the evidence accurately than repeat claims we can't support.
What's reasonably well supported
Practising a cognitive task makes you better at that task and at closely related ones. Do crosswords regularly and your vocabulary retrieval, pattern recognition and word-finding speed genuinely improve. That's real, measurable, and not in dispute.
There's also decent evidence that staying mentally and socially active across life is associated with better cognitive outcomes in older age. Puzzles are one pleasant way of being mentally active.
Where the claims outrun the evidence
The weak link is transfer. Getting better at crosswords does not reliably make you better at unrelated things — memory for names, planning, decision-making. Broad "brain training makes you smarter overall" claims have repeatedly failed to hold up under careful testing, and several companies have been penalised for making them.
Association also isn't causation. People who do puzzles into their eighties may be doing them because their cognition is intact, rather than the other way round.
Puzzles reliably make you better at puzzles, and puzzles are good for you in the ordinary way that enjoyable, engaging activities are good for you. That's a smaller claim than the industry makes, and it's true.
The genuinely useful bit: vocabulary
One benefit is concrete and hard to argue with. Solving puzzles on unfamiliar topics exposes you to words you'd otherwise never meet, in a context that forces you to engage with meaning. That's real vocabulary acquisition — and vocabulary is one of the better predictors of reading comprehension.
This is where topic-generated puzzles have an edge over a fixed library. If every crossword you solve draws from the same pool of common crossword vocabulary, you plateau. Generating puzzles on subjects you know nothing about keeps introducing genuinely new material.
What we'd actually claim
- You'll get faster and better at word puzzles. Definitely.
- You'll pick up vocabulary, especially on unfamiliar topics. Very likely.
- You'll learn facts about subjects you quiz yourself on. Yes — that's just studying.
- You'll become generally smarter. We're not claiming that, and you should be wary of anyone who does.
The best reason to play a word game is that you enjoy it. Enjoyment is what keeps you doing it, and consistency is what produces every benefit above.
Common questions
- Do crosswords prevent cognitive decline?
- The evidence doesn't support that strong a claim. Regular puzzling reliably improves your ability at puzzles and related word skills, and mental engagement is associated with better cognitive ageing — but a causal preventive effect hasn't been established.
- What is the real benefit of word puzzles?
- Measurable improvement at word tasks themselves — retrieval speed, pattern recognition, vocabulary — plus the genuine vocabulary gains that come from encountering unfamiliar words in a meaningful context.
Keep reading
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