What are effect sizes and how do they vary across different fields?

What are effect sizes and how do they vary across different fields?

Effect sizes are quantitative measures of the magnitude of a phenomenon. They vary across fields like psychology, medicine, and education.

Can you give examples of effect sizes in psychology and medicine?

In psychology, Cohen's d is often used, with small, medium, and large effect sizes defined as 0.2, 0.5, and 0.8 respectively. In medicine, odds ratios or risk ratios are common.

How do researchers decide which effect size to use?

Researchers choose effect sizes based on the nature of their data, the research question, and the conventions of their field.

Are there any limitations to using effect sizes?

Yes, effect sizes can be influenced by sample size, and they don't provide information about the direction of the effect or its practical significance.