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
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Journal ArticleDOI
Influence of Physical Aspects and Throwing Velocity in Opposition Situations in Top-Elite and Elite Female Handball Players
TL;DR: Top elite players compared to elite players showed differences in anthropometric characteristics which were mainly located in the upper limbs and mostly were nonmodifiable aspects by training, and the best players were able to maintain a high throwing velocity in different tactical situations.
Journal ArticleDOI
Effects of virtual reality-based cognitive training in older adults living without and with mild dementia: a pretest–posttest design pilot study
Ludmiła Zając-Lamparska,Monika Wiłkość-Dębczyńska,Adam Wojciechowski,Marta Podhorecka,Anna Polak-Szabela,Łukasz Warchoł,Kornelia Kędziora-Kornatowska,Aleksander Araszkiewicz,Paweł Izdebski +8 more
TL;DR: The results provide support for the usefulness of VR technology in cognitive interventions in older adults and recommend the GRADYS game for cognitive enhancement and as a possible counter-measure for cognitive decline experienced in normal cognitive ageing.
Journal ArticleDOI
Dimensions of parenting styles, social climate, and bullying victims in primary and secondary education.
TL;DR: Parental factors are related to bullying victimization and socio‐affective group variables (social preference, acceptance or rejection levels, and the number of friends) and the study highlighs risk and protective factors for victimization.
Journal ArticleDOI
Effects of high-intensity functional circuit training on motor function and sport motivation in healthy, inactive adults.
Jan Wilke,Stefanie Kaiser,Daniel Niederer,Kristin Kalo,Tobias Engeroff,Christian Morath,Lutz Vogt,Winfried Banzer +7 more
TL;DR: This trial examined the effects of a high‐intensity functional circuit training (HIFCT) on motor performance and exercise motivation in untrained adults.
Journal ArticleDOI
Effect of microbial cell preparation on renal profile and liver function among type 2 diabetics: a randomized controlled trial
Somayyeh Firouzi,Barakatun Nisak Mohd-Yusof,Hazreen Abdul Majid,Amin Ismail,Nor Azmi Kamaruddin +4 more
TL;DR: 12 weeks supplementation with daily dosage of 6 × 1010 Colony Forming Units of multi-strain microbial cell preparation significantly improved urea levels, which significantly declined in the probiotic group.
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.