Main evidence and numbers
| Comparison and result wey dem review | Standardized mean effect, g | 95% confidence interval |
|---|---|---|
| Working-memory training: nonverbal ability compared with treated control group | 0.05 | −0.02 to 0.13 |
| Working-memory training: nonverbal ability compared with untreated control group | 0.20 | 0.11 to 0.28 |
| N-back training: fluid reasoning, different kinds of control groups | 0.16 | 0.08 to 0.24 |
Sources: review of working memory, table for immediate transfer, review of n-back, analysis by area. Treated control groups do another training activity; untreated control groups no receive similar training. These na standardized differences between groups, no IQ points or expected range of personal gains. The n-back review estimate for reasoning become smaller and uncertain after dem adjust am for kind of control group.
Wetin dey affect am?
The wider review include different ages and working-memory tasks; the n-back review focus on healthy adults. Which studies dem choose, how dem analyze results and the control activities help explain why the estimates differ. Review of working memory, review of n-back
Try the free test wey connect to this one
N-back test
Test yourself: n-back (English). Use am to explore how to update information for memory; e no promise say IQ go increase.
Common questions
If you improve for the game, na real improvement?
Na improvement for that task. To know whether another ability improve, separate evidence dey needed.
These numbers cover every kind of brain training?
Dem concern the working-memory training and reasoning results wey dem state. No suppose apply am to every learning activity.
If an interval include no effect, e prove say benefit no dey at all?
No. E show say the estimate get uncertainty. E no support any guaranteed personal gain.
Sources
Cite dis page: Brain training fit improve your IQ?. Helibrain. 2026. https://helibrain.com/pcm/answers/can-brain-training-improve-iq. CC BY 4.0.
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