The Prevalence of Marginally Significant Results in Psychology Over Time.

(2016) looked at the frequency of articles in which at least one result was reported as marginally significant or as approaching significance in articles from the journals Cognitive Psychology, Developmental Psychology , and the Journal of Personality and Social Psychology , meant to “represent three major subfields of psychology: cognitive, developmental, and social” (p. 1037), for the years 1970, 1980, 1990, 2000, and 2010.

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464 sageopen Psychological Science Psychol Sci PMC6472145 6472145 6472145 30789796 10.1177/0956797619830326 The Prevalence of Marginally Significant Results in Psychology Over Time Olsson-Collentine Anton 1 ✉ van Assen Marcel A L M 1 2 Hartgerink Chris H J 1 1 Department of Methodology and Statistics, Tilburg University 2 Department of Sociology, Utrecht University ✉ Anton Olsson-Collentine, Tilburg University, Department of Methodology and Sta

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Although there is no telling how common the different expressions on Hankins’s list are, their existence nonetheless indicates that our estimates of the prevalence of marginally significant results in psychology are likely to be underestimates because of the varied terminology available to label results that are close to significance.

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Contrary to what was reported by previous researchers, our results showed no evidence of an increasing trend in any discipline; in all disciplines, the percentage of p values reported as marginally significant was decreasing or constant over time.

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Keywords: null-hypothesis significance testing, p values, marginal significance, APA, over time, open data, open materials status released display-pdf yes is-in-collection-domain yes is-olf no is-manuscript no is-preprint no is-journal-matter no is-scanned no is-retracted no Received 2017 Oct 12; Accepted 2018 Nov 1; Issue date 2019 Apr.

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Thus, this outcome provides limited information on researchers’ usage of the concept of marginal significance, both over time and across journals.

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used to represent social psychology, still showed a positive trend.

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