Objective: Although basing conclusions on confidence intervals for effect size estimates is preferred over relying on null hypothesis significance testing alone, confidence intervals in psychology are typically very wide. One reason may be a lack of easily applicable methods for planning studies to achieve sufficiently tight confidence intervals. This paper presents tables and freely accessible tools to facilitate planning studies for the desired accuracy in parameter estimation for a common effect size (Cohen’s d). In addition, the importance of such accuracy is demonstrated using data from the Reproducibility Project: Psychology (RPP). Results: It is shown that the sampling distribution of Cohen’s d is very wide unless sample sizes are co...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Objective: Although basing conclusions on confidence intervals for effect size estimates is preferre...
Objective: Although basing conclusions on confidence intervals for effect size estimates is preferre...
Objective: Although basing conclusions on confidence intervals for effect size estimates is preferre...
Objective: Although basing conclusions on confidence intervals for effect size estimates is preferre...
Objective: Although basing conclusions on confidence intervals for effect size estimates is preferre...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Objective: Although basing conclusions on confidence intervals for effect size estimates is preferre...
Objective: Although basing conclusions on confidence intervals for effect size estimates is preferre...
Objective: Although basing conclusions on confidence intervals for effect size estimates is preferre...
Objective: Although basing conclusions on confidence intervals for effect size estimates is preferre...
Objective: Although basing conclusions on confidence intervals for effect size estimates is preferre...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...
Reproducibility is a defining feature of science, but the extent to which it characterizes current r...