Random-effects meta-analysis is better than fixed-effect at guessing the true average result across different psychology and management studies, especially when fixing common data problems.

Evidence from Studies

Supporting (1)

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A Comparative Evaluation of Psychometric Meta‐Analysis Methods in Management and Applied Psychology: Toward a Nuanced Understanding of Their Accuracy

Computational/Algorithm Study

The study tested different ways to combine research results and found that the random-effects method works better than the fixed-effect method when studies vary a lot, which is exactly what the claim says.

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Source Study

A Comparative Evaluation of Psychometric Meta‐Analysis Methods in Management and Applied Psychology: Toward a Nuanced Understanding of Their Accuracy

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DOI: 10.1111/peps.70001

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