Reporting of Effect Size and Confidence Intervals: Review and Methods of Calculation
DOI:
https://doi.org/10.5964/psyct.v7i1.92Keywords:
null hypothesis significance testing, effect size, confidence intervals, error bars, significance testsAbstract
Despite continuous criticism, significance tests remain the main procedure for statistical inference in psychology. In order to avoid some of the problems associated with them, it has been argued that authors should report effect sizes and confidence intervals as supplemental methods of data analysis. The present article discusses arguments in favor of reporting effect sizes and confidence intervals, and investigates how common such practices are by reviewing articles published in Bulgarian psychology journals. The results show that the majority of articles still don’t report effect sizes and that very few articles report confidence intervals. The article then outlines different measures of effect size and methods for their calculation. It also presents methods for calculating confidence intervals for effect sizes. While it is ultimately the authors’ responsibility to report them, it is argued that stronger editorial policies and actively teaching these concepts to psychology students can encourage psychologists to change the way they analyze their data.
Language: Bulgarian
Additional Files
Issue
Section
License
Authors who publish with Psychological Thought (PSYCT) agree to the following terms:
Articles are published under the Creative Commons Attribution 4.0 International License (CC BY 4.0).
Under the CC BY license, authors retain ownership of the copyright for their article, but authors grant others permission to use the content of publications in PSYCT in whole or in part provided that the original work is properly cited. Users (redistributors) of PSYCT are required to cite the original source, including the author's names, PSYCT as the initial source of publication, year of publication, volume number and DOI (if available).
Authors may publish the manuscript in any other journal or medium but any such subsequent publication must include a notice that the manuscript was initially published by PSYCT.
Authors grant PSYCT the right of first publication. Although authors remain the copyright owner, they grant the journal the irrevocable, nonexclusive rights to publish, reproduce, publicly distribute and display, and transmit their article or portions thereof in any manner.
