Systematic review and meta-analysis shows computerized cognitive training improves mild cognitive impairment

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Journal of neurology Published May 14, 2026 Medically reviewed May 14, 2026 Study authors: Guan Yuying, Zhang Shipeng, Jiang Yanjie, Zhang Qinxiu, Xiong Peizheng PubMed ↗ DOI ↗ By Dr. Ji-eun Park, MD · Brain, Mind & Pain

Key Takeaway

Consider CCT as a non-pharmacological strategy for mild cognitive impairment with moderate short-term cognitive benefits.

This systematic review and meta-analysis examined the efficacy of computerized cognitive training (CCT) for patients with mild cognitive impairment. The pooled analysis included 2056 participants across various studies. The primary outcome measured was global cognitive function, while secondary outcomes included specific cognitive domains, psychosocial functioning, and activities of daily living. CCT was compared against control conditions.

The main synthesized finding indicated a significant moderate improvement in overall cognitive function. The reported effect size was a standardized mean difference (SMD) of 0.62 with a 95% confidence interval of 0.43-0.81. This direction of effect favored the intervention group over the control group.

The authors acknowledge several limitations that affect the interpretation of these results. High heterogeneity was observed across the included studies. Additionally, the training protocols and assessment tools varied significantly between trials. The follow-up duration was not reported. Safety data such as adverse events, serious adverse events, discontinuations, and tolerability were not reported.

The practice relevance of this work is to inform the development of clinical non-pharmacological intervention strategies. Clinicians should interpret these findings cautiously given the lack of data on long-term effects and the challenges in standardized clinical application. Funding sources and conflicts of interest were not reported.

Study Details

Study typeMeta analysis

Sample sizen = 2,056

EvidenceLevel 1

PublishedMay 2026

PMID42133113

View Original Abstract ↓

BACKGROUND: We sought to quantify the effects of computerized cognitive training (CCT) on patients with mild cognitive impairment (MCI), to inform the development of clinical non-pharmacological intervention strategies. METHODS: We searched PubMed, Cochrane Library, Embase, and Web of Science databases from 2007 to February 2026 for randomized controlled trials (RCTs) of CCT in patients with MCI. Outcomes including global cognition, specific cognitive domains, psychosocial functioning, and activities of daily living were analyzed separately by stata 18 and Review Manager 5.4. RESULTS: We included 30 studies and 2056 participants. Our meta-analysis revealed that, compared with control conditions, CCT led to a significant moderate improvement in overall cognitive function, standardized mean difference (SMD) = 0.62, 95% confidence interval (CI) = 0.43-0.81; I = 73%. Subgroup analysis showed that intervention characteristics-including session duration, training device, total intervention length, weekly frequency, sample size, and assessment tools-yielded similar improvements in global cognition, with no statistically significant differences between subgroups. These findings indicate that the cognitive benefits of CCT are consistent and robust. CONCLUSION: This systematic review and meta-analysis shows CCT significantly improves global cognitive function in MCI patients, with stable benefits across subgroups. Despite clear overall effects, high heterogeneity, varying training protocols and assessment tools exist. Further large, long-term RCTs are needed to clarify CCT's long-term effects and support its standardized clinical application. TRIAL REGISTRATION: PROSPERO International prospective register of systematic reviews CRD420261328762; https://www.crd.york.ac.uk/PROSPERO/view/CRD420261328762 .