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Publication Bias (Evidence Rating Element)
Broadly refers to the idea that published evaluations are more likely to show large and/or statistically significant program effects, whereas unpublished evaluations are more likely to show null, small, or “negative” (i.e., opposite of what would be predicted) program effects. This is a dimension in the Scoring Instrument that rates the extent to which a meta-analysis investigates the potential for publication bias in the sample of included studies.