The 1966 book 'The Influence of Culture on Visual Perception' reported that U.S. college students perceived some visual illusions to a much greater degree than people from many other cultures, including the San foragers of the Kalahari.
Notes on verification
Confirmed by the original APA Monitor article and cross-checked against the underlying academic sources, including Henrich, Heine & Norenzayan (2010) and Segall, Campbell & Herskovits's original 1963/1966 work. Multiple independent, high-quality sources corroborate the claim's details and direction of effect. [tier=gold indep_score=0.95 clusters=3 claim_tier=notable | kind=attributed eligibility=high]
Sources
- Are your findings 'WEIRD'? - American Psychological Association (seed:psychology_and_neuroscience)
- https://www2.psych.ubc.ca/~henrich/pdfs/WeirdPeople.pdf (corroboration)
- https://www.science.org/doi/10.1126/science.139.3556.769 (corroboration)
- https://www.cse.iitk.ac.in/users/amit/books/keith-2011-crosscultural-psychology-contemporary.html (corroboration)