A new paper from Nick J. Broers of Maastricht University argues that the size of the effects measured in psychology experiments is essentially meaningless.. An 'effect size' is simply the magnitude of ...

Across all types of measures, average effect sizes were +0.40 for one-to-one tutoring, +0.26 for small-group interventions, +0.18 for whole-classroom treatments, and +0.10 for whole-school treatments.

Why does “correlational, not causation” matter for effect sizes? In studies designed to identify the causal effect of a program, effect sizes as low as 0.10 standard deviations are considered ...

Effect Size in Education. For those of us who aren’t statisticians, effect size works like this: Imagine you’re taking a road trip from Boston to Chicago. If you drive an average of 60 MPH, you’ll ...

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 ...

The most common areas of focus for the trials were cardiovascular risk factors (43.3%), antithrombotic therapy (23.8%), heart failure (7.8%), and arrhythmias (6.9%), with more than half (54.1%) ...

Effect size is potentially independent of percent slowing of decline, Goldberg and colleagues wrote in the Journal of Neurology, Neurosurgery and Psychiatry. "We showed that in the recent studies ...

Differences between individuals with autism and those without have lessened over time, which may be tied to changes in diagnostic practices, according to a meta-analysis published in JAMA ...

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 ...