Journal ArticleDOI
Effect size estimates: Current use, calculations, and interpretation.
TLDR
A straightforward guide to understanding, selecting, calculating, and interpreting effect sizes for many types of data and to methods for calculating effect size confidence intervals and power analysis is provided.Abstract:
The Publication Manual of the American Psychological Association (American Psychological Association, 2001, American Psychological Association, 2010) calls for the reporting of effect sizes and their confidence intervals. Estimates of effect size are useful for determining the practical or theoretical importance of an effect, the relative contributions of factors, and the power of an analysis. We surveyed articles published in 2009 and 2010 in the Journal of Experimental Psychology: General, noting the statistical analyses reported and the associated reporting of effect size estimates. Effect sizes were reported for fewer than half of the analyses; no article reported a confidence interval for an effect size. The most often reported analysis was analysis of variance, and almost half of these reports were not accompanied by effect sizes. Partial η2 was the most commonly reported effect size estimate for analysis of variance. For t tests, 2/3 of the articles did not report an associated effect size estimate; Cohen's d was the most often reported. We provide a straightforward guide to understanding, selecting, calculating, and interpreting effect sizes for many types of data and to methods for calculating effect size confidence intervals and power analysis.read more
Citations
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Journal ArticleDOI
Making a Difference: Affective Distress Explains Discrepancy Between Objective and Subjective Cognitive Functioning After Mild Traumatic Brain Injury.
Gabrielle A Hromas,Zachary M Houck,Breton M Asken,Adrian M Svingos,Sarah M Greif,Shelley C. Heaton,Michael S. Jaffee,Russell M. Bauer +7 more
TL;DR: Evaluation of affective distress is warranted in the context of higher subjective cognitive complaints than objective test performance, and clinical interpretation of subjective cognitive dysfunction should consider these additional variables.
Journal ArticleDOI
A controlled experiment on time pressure and confirmation bias in functional software testing
TL;DR: It is found necessary that testers develop self-awareness of confirmation bias and counter its potential adverse effects with a disconfirmatory attitude and further replications are recommended to investigate the effect of time pressure as a potential contributor to the manifestation of confirmation biased.
Journal ArticleDOI
Biomechanical Analysis of the Cross, Hook, and Uppercut in Junior vs. Elite Boxers: Implications for Training and Talent Identification.
Daniel Dinu,Julien Louis +1 more
TL;DR: The findings show that Elite boxers systematically produced more force and at a higher velocity for the three punch types compared to Juniors, which has important implications for practitioners involved in the talent identification process, longitudinal follow-up, and training of boxers.
Journal ArticleDOI
A Kinematic Study of Progressive Micrographia in Parkinson's Disease.
Poonam Zham,Sanjay Raghav,Sanjay Raghav,Peter A. Kempster,Poosapadi Arjunan S,Kitty Wong,Kanae J. Nagao,Dinesh Kumar +7 more
TL;DR: Kinematic and pen-tip pressure profiles suggest that progressive micrographia in PD reflects poorly sustained net force and although progressive micro graphia resembles the sequence effect of general bradykinesia, it did not find a significant correlation with overall motor disability, nor with the aggregate UPDRS-III bradyKinesia scores for the dominant arm.
Journal ArticleDOI
The Outcome of Two Occupational Therapy Group Programs on the Social Functioning of Individuals with Major Depressive Disorder
Enos M. Ramano,Marianne de Beer +1 more
TL;DR: In this paper, the authors compared two occupational therapy group programs, an existing discussion/activity prognosis program and an existing group activity program, for individuals with major depressive disorder (MDD).
References
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Book
Statistical Power Analysis for the Behavioral Sciences
TL;DR: The concepts of power analysis are discussed in this paper, where Chi-square Tests for Goodness of Fit and Contingency Tables, t-Test for Means, and Sign Test are used.
Book
Using multivariate statistics
TL;DR: In this Section: 1. Multivariate Statistics: Why? and 2. A Guide to Statistical Techniques: Using the Book Research Questions and Associated Techniques.
Book
Nonparametric statistics for the behavioral sciences
TL;DR: This is the revision of the classic text in the field, adding two new chapters and thoroughly updating all others as discussed by the authors, and the original structure is retained, and the book continues to serve as a combined text/reference.
Book
Applied multiple regression/correlation analysis for the behavioral sciences
TL;DR: In this article, the Mathematical Basis for Multiple Regression/Correlation and Identification of the Inverse Matrix Elements is presented. But it does not address the problem of missing data.