Meta-Analysis of Memory-Focused Training and Multidomain Interventions in Mild Cognitive Impairment.

Area of Science:

• Neuroscience
• Cognitive Psychology
• Gerontology

Background:

• Cognitive interventions aim to improve neuropsychological outcomes.
• Memory-focused interventions may offer greater benefits for mild cognitive impairment (MCI) than previously thought.
• The comparative efficacy of memory-based versus multidomain interventions for MCI remains unclear.

Purpose of the Study:

• To conduct a meta-analytic review and subgroup analysis on cognitive training for individuals with MCI.
• To compare the efficacy of memory-based training against multidomain interventions in individuals with MCI.

Main Methods:

• A meta-analysis of 32 randomized controlled trials was performed.
• Included studies focused on memory-focused training (9 studies) and multidomain interventions (17 studies).
• Subgroup analysis compared the effects of memory-based versus multidomain cognitive training.

Main Results:

• Both memory-focused training (Hedges' g = 0.947) and multidomain interventions (Hedges' g = 0.420) showed significant positive effects on cognition in MCI.
• Memory-based training yielded significantly greater summary effects compared to multidomain interventions (SMD Z = 2.162, p = 0.031).
• No difference in effect sizes was observed when comparing outcomes limited to their respective domains.

Conclusions:

• Both memory-based and multidomain interventions benefit cognition in individuals with MCI.
• Strictly memory-based interventions were more effective in improving cognition for MCI than multidomain interventions.
• These findings support the targeted use of memory-based cognitive training for managing MCI.