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Brain training apps built a large industry on the promise that practising a task improves general thinking. The research on whether that transfer happens is one of the clearer negative findings in cognitive psychology.
The near and far transfer distinction
Near transfer means improvement on tasks closely resembling the trained one. Far transfer means improvement on genuinely different tasks and on everyday functioning. Training studies reliably produce near transfer: practise a digit span task and your digit span improves. The contested claim has always been far transfer, and large well-controlled trials have generally failed to find it. You get better at the game.
Why the studies disagreed
Much of the early positive literature used passive control groups, where the comparison group did nothing. That design cannot separate genuine cognitive gain from expectation effects and general test familiarity. When researchers switched to active control groups doing an alternative engaging activity, the advantage largely disappeared. A consensus statement signed by a large number of cognitive scientists set out this critique, and regulators in several countries have acted against overstated marketing claims.
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See NeuronGold PricingWhat does have evidence
Aerobic exercise has the most consistent support for cognitive benefit in adults, particularly for executive function. Sleep quality and consistency matter enormously. Learning something genuinely new and difficult - an instrument, a language, a complex physical skill - engages plasticity in a way that repeating a trained task does not. Social engagement predicts cognitive outcomes in longitudinal research. None of these are as marketable as an app, which is largely why they get less attention.
Key takeaways
- Training reliably produces near transfer but generally not far transfer to everyday function
- Early positive studies mostly used passive control groups, which cannot rule out expectation effects
- Aerobic exercise has the most consistent evidence for adult cognitive benefit
- Learning genuinely new difficult skills engages plasticity in a way repeated tasks do not
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NeuronGold™ — Official Site Pricing
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