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the claim

Brain training games increase general fluid intelligence

the verdict
REFUTED
the evidence says no
Recorded sources
1 source for · 4 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Extensive research and meta-analytic evidence indicate that while brain training can improve performance on specific trained tasks, these cognitive gains generally fail to transfer to improvements in broad fluid intelligence.

The analysis

The retrieved literature contains multiple individual studies and meta-analyses showing a lack of far-transfer effects from working memory or cognitive training to fluid intelligence. Although a couple of studies (such as [1] and [3]) suggest weak or limited transfer under specific conditions, the stronger consensus from rigorous controls and meta-analytic reviews (such as [4]) indicates that brain training does not reliably increase general fluid intelligence.

Evidence for · 1
Recorded source metadata

Radosław Wujcik, Michał Nowak, Edward Nęcka. Enhancement of Executive Control through Short-term Cognitive Training: Far-transfer Effects on General Fluid Intelligence. 2017. https://doi.org/10.1515/ppb-2017-0009

This study found that short-term executive control training improved general fluid intelligence, although the gains were partially attributed to general participation effects rather than specific cognitive improvements.

Evidence against · 4
Recorded source metadata

Zhao Xin, Zhou‐Ren Lai, Fu. Li, Joseph H. R. Maes. Near‐ and Far‐Transfer Effects of Working Memory Updating Training in Elderly Adults. 2014. https://doi.org/10.1002/acp.3011

This study found significant positive effects on trained tasks, but observed an absence of transfer effects to higher-order cognitive processes like non-verbal reasoning in elderly adults.

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More against · 3
Recorded source metadata

Ludmiła Zając-Lamparska, Janusz Trempała. Effects of working memory and attentional control training and their transfer onto fluid intelligence in early and late adulthood. 2016. https://doi.org/10.5114/hpr.2016.56846

While this study noted a weak transfer effect onto fluid intelligence, it emphasized that the overall effectiveness of basic cognitive training is extremely limited and dependent on specific conditions.

Recorded source metadata

Stefanie Lange, Heinz‐Martin Süß. Experimental Evaluation of Near‐ and Far‐Transfer Effects of an Adaptive Multicomponent Working Memory Training. 2015. https://doi.org/10.1002/acp.3126

This study found no far-transfer effects to reasoning abilities, noting that improvements were largely driven by unspecific factors rather than true cognitive enhancement.

Recorded source metadata

Jose A. Rodas, Ciara Greene. Small Improvements in Working Memory After Cognitive Training do not Transfer to Fluid Intelligence: Evidence From a Meta-analysis. 2020. https://doi.org/10.31234/osf.io/9j64y

This comprehensive meta-analysis concluded that while working memory can be improved slightly through training, these gains do not generalize to complex skills such as fluid intelligence.

The paper trail · every fact has a biography
first checked01 Aug 2026
judged → REFUTED · 1601 Aug 2026
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