An interactive tool for visualizing sex differences

This tool allows you to see the effect size (d) and percent overlap for any comparison between males and females. Enter the mean and standard deviation below for each group. If you have the standard error instead of the standard deviation, check the box to enter it and the sample size (n).

Male Mean
Male SD
Male SEM
Male n
Female Mean
Female SD
Female SEM
Female n
Use Standard Error
Export CSV

This tool assumes both distributions are normal. Effect size is based on Cohen’s d. Overlap is based on Weitzman’s ∆.

If you use this tool to prepare a publication, please cite: Maney DL. 2016 Perils and pitfalls of reporting sex differences. Phil. Trans. R. Soc. B 371: 20150119.