"Participants were 124 students from a German university (Mage = 22.4 years; 84% women; 16% men)."
@npub16dsu2ghu9yd363utyw7dejqc8rgx5ps7r4hxddrvx2x64dh73p7qqkh6vy
After exclusions the sample was closer to 100. That’s actually decent, given typical course enrollments in #higherEd. It’s also enough statistical power to detect the effects that prior research when comparing between (rather than within) participants’.
Gender is certainly not equally distributed or representative in their sample, but I don’t know of any data to suggest that learning to think critically is highly dependent on gender distribution.