Question 16 of 10
What proportion of measured psychological sex differences are small or close to zero?
About 78%.
Hyde (2005), reviewing 46 meta-analyses. Later metasynthesis of 386 effects put the average absolute difference at d = 0.21 — roughly 92% overlap.
Source: peer-reviewed or nationally representative surveyNine more questions, every answer from published research. You are scored on how far off you were and in which direction — never on how many you got right.