People from WEIRD societies represent only about 12% of the world's population.
Notes on verification
Confirmed directly by the original APA Monitor article and independently corroborated by Nature, ScienceDaily, and the original Henrich et al. (2010) paper, all citing the same 12% figure derived from Arnett's 2008 demographic analysis. [cascade flags: aggregator_dropped_primary_exists | tier=silver indep_score=0.983 clusters=3 claim_tier=notable | kind=attributed eligibility=high (extractor: empirical/high)]
Sources
- Are your findings 'WEIRD'? - American Psychological Association (seed:psychology_and_neuroscience)
- https://www.nature.com/articles/466029a (corroboration)
- https://www.pnas.org/doi/10.1073/pnas.1721165115 (corroboration)
- https://www2.psych.ubc.ca/~henrich/pdfs/Weird_People_BBS_final02.pdf (corroboration)