An 'effect size' is simply the magnitude of an effect. For instance, if I show that giving students an apple before an exam increases scores by 5% on average, I could say that the effect size of the ...

Readers are often - and understandably - frustrated when it comes to reports of educational experiments and effect sizes. Let’s say a given program had an effect size of +0.30 (or 30% of a ...

Nilanjan Chatterjee and colleagues report an analysis of the number and effect size distribution of susceptibility variants identified from current genome-wide association studies. They estimate ...

Across contemporary cardiovascular clinical trials, the estimates of expected event rates and effect sizes that investigators use to calculate sample sizes—and funding requirements—often come in ...

While effect sizes are influenced by many factors, distinguishing between correlation and causation is fundamental to a shared understanding of the meaning of the word “effect.” ...

Contingency management interventions for stimulant and opioid use disorders should offer $128 per week for vouchers or $55 ...

Standard effect sizes are more meaningful outcomes in Alzheimer's disease drug trials than the widely used metric of percent slowing of decline, an analysis suggested. In recent trials of ...

Objective To conduct a systematic review and meta-analysis of the evidence on the effects of β-alanine supplementation on exercise capacity and performance. Design This study was designed in ...

One estimated that the so-called effect size (a measure of statistical significance) in placebo groups had nearly doubled over that time.

An 'effect size' is simply the magnitude of an effect. For instance, if I show that giving students an apple before an exam increases scores by 5% on average, I could say that the effect size of the ...