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Open AccessJournal ArticleDOI

The Bayesian New Statistics: Hypothesis testing, estimation, meta-analysis, and power analysis from a Bayesian perspective

John K. Kruschke, +1 more
- 01 Feb 2018 - 
- Vol. 25, Iss: 1, pp 178-206
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TLDR
In this paper, the authors compare Bayesian and frequentist approaches to hypothesis testing and estimation with confidence or credible intervals, and explain how Bayesian methods achieve the goals of the New Statistics better than frequentist methods.
Abstract
In the practice of data analysis, there is a conceptual distinction between hypothesis testing, on the one hand, and estimation with quantified uncertainty on the other. Among frequentists in psychology, a shift of emphasis from hypothesis testing to estimation has been dubbed "the New Statistics" (Cumming 2014). A second conceptual distinction is between frequentist methods and Bayesian methods. Our main goal in this article is to explain how Bayesian methods achieve the goals of the New Statistics better than frequentist methods. The article reviews frequentist and Bayesian approaches to hypothesis testing and to estimation with confidence or credible intervals. The article also describes Bayesian approaches to meta-analysis, randomized controlled trials, and power analysis.

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How Many Participants Do We Have to Include in Properly Powered Experiments? A Tutorial of Power Analysis with Reference Tables.

TL;DR: In this article, the authors describe reference numbers needed for the designs most often used by psychologists, including single-variable between-groups and repeated-measures designs with two and three levels, two-factor designs involving two repeated measures and one repeated measure, and split-plot design.
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Analyzing ordinal data with metric models: What could possibly go wrong?

TL;DR: The authors surveyed all articles in the Journal of Personality and Social Psychology (JPSP), Psychological Science (PS), and the Journal Experimental Psychology: General (JEP:G) that mentioned the term Likert, and found that 100% of the articles that analyzed ordinal data did so using a metric model.
References
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TL;DR: The American Statistical Association (ASA) released a policy statement on p-values and statistical significance in 2015 as discussed by the authors, which was based on a discussion with the ASA Board of Trustees and concerned with reproducibility and replicability of scientific conclusions.
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