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[From the preprint “Accumulation bias in meta-analysis: the need to consider time in error control” by Judith ter Schure and Peter Grünwald, posted at arXiv.org] “Studies accumulate over time and meta-analyses are mainly retrospective. These two characteristics introduce dependencies between…
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[From the blog “Where Do Non-Significant Results in Meta-Analysis Come From?” by Ulrich Schimmack, posted at Replicability-Index] “It is well known that focal hypothesis tests in psychology journals nearly always reject the null-hypothesis … However, meta-analyses often contain a fairly…
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[From the blog “Be careful what you wish for: cautionary tales on using single studies to inform policymaking” by Emmanuel Jimenez, posted at http://www.3ieimpact.org.%5D “For a development evaluator, the holy grail is to have evidence from one’s study be taken…
Read MoreCategory: NEWS & EVENTS Tags: 3ie, 3ie replication programme, Dengvaxia, Meta-analysis, Philippines, replication, Systematic reviews
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[From the article “Automatic extraction of quantitative data from ClinicalTrials.gov to conduct meta-analyses” by Richeek Pradhan et al., published in the Journal of Clinical Epidemiology] “Systematic reviews and meta-analyses are labor-intensive and time-consuming. Automated extraction of quantitative data from primary…
Read MoreCategory: NEWS & EVENTS Tags: Automatic extraction, ClinicalTrials.gov, EXACT, Meta-analysis, Python, replication, Systematic reviews
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[From the abstract of the article “What Meta-Analyses Reveal About the Replicability of Psychological Research” by T.D. Stanley, Evan Carter, and Hristos Doucouliagos, published in Psychological Bulletin] “Can recent failures to replicate psychological research be explained by typical magnitudes of statistical power,bias…
Read MoreCategory: NEWS & EVENTS Tags: Chris Doucouliagos, Heterogeneity, Meta-analysis, Power, Psychological Bulletin, Psychology, replication, Tom Stanley
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[From the article, “Meta-analyses were supposed to end scientific debates. Often, they only cause more controversy” by Jop de Vrieze, published at http://www.sciencemag.org%5D “Meta-analyses were thought to be debate enders, but now we know they rarely are,” Ferguson says. “They should…
Read MoreCategory: NEWS & EVENTS Tags: Cochrane, Media violence, Meta-analysis, Science journal, Video games
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[From the article “The Dismal Science Remains Dismal, Say Scientists” by Adam Rogers at wired.com] “WHEN HRISTOS DOUCOULIAGOS was a young economist in the mid-1990s, he got interested in all the ways economics was wrong about itself—bias, underpowered research, statistical shenanigans. Nobody wanted…
Read MoreCategory: NEWS & EVENTS Tags: COLIN CAMERER, Hristos Doucouliagos, John Ioannidis, Meta-analysis, Reproducibility, Underpowered
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ScienceOpen has a collection entitled: “Remedies to the Reproducibility Crisis”. The collection is introduced thusly: “Psychology, Medicine, Neuroscience and many other research fields, are facing a serious reproducibility crisis, that is, most of the findings published in peer-review journals, independently…
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[From Rolf Zwaan’s blog “Zeitgeist”.] “A form of replication that has received not much attention yet is what I will call concurrent replication. The basic idea is this. A research group formulates a hypothesis that they want to test. At…
Read MoreCategory: NEWS & EVENTS Tags: Concurrent replication, Meta-analysis, Pre-registration, replication, Rolf Zwaan
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TRN previously posted about two sessions on replication at the 2017 ASSA meetings. In what may be a sign of changing times, the American Economic Association is sponsoring a third session on this topic. The session, “Meta-Analysis and Reproducibility in…
Read MoreCategory: Uncategorised Tags: BITSS, Chris Doucouliagos, John Ioannidis, Meta-analysis, Reproducibility, SSMART grants, Tom Stanley
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