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Neglect of publication bias compromises meta-analyses of educational research

Ivan Ropovik; Matus Adamkovic; David Greger

PLOS ONE, Vol. 16 No. 6 · 2021 · Inggris · PLOS Scopus

Because negative findings have less chance of getting published, available studies tend to be a biased sample. This leads to an inflation of effect size estimates to an unknown degree. To see how meta-analyses in education account for publication bias, we surveyed all meta-analyses published in the…