Table S1.

Demographic information in all samples: Preliminary group-listing study

		Participants
Country	N	Students, n	Nonstudents, n	Female, %	Mean age, y	No. in selected groups
Afghanistan	Two local judges generated the list of groups					21
Australia	35	35		85.71	28.57	30
Belgium	Unknown					19
Bolivia (UMSA)	70	70		48.57	21.40	28
Bolivia (UPB-CB)	58	58		50.00	19.70	33
Canada	100	100		58.00	19.40	30
Chile	104	Unknown	Unknown	Unknown	Unknown	14
Costa Rica	43	43		37.00		26
Denmark	40		40	Unknown	Unknown	20
Egypt	32		32	50.00	35.53	16
England	31	24	7	38.71	35.50	30
Finland	41	41		83.00	23.00	25
Germany	18		18	66.67	29.00	29
Greece	62	32	30	58.06	28.20	26
Hong Kong	30	30		63.00	20.00	27
India	56	56		37.50	22.07	33
Iran	40	40		30.00	21.03	37
Iraq	30		30	40.00	33.10	24
Israel (Jews)	Unknown					25
Israel (Muslims)	Unknown					26
Italy	55	35	20	58.18	31.54	27
Japan	53	53		72.00	21.30	21
Jordan	30		30	40.00	32.53	26
Kenya	63	31	32	39.70	24.48	21
Lebanon	30		30	33.33	36.07	23
Malaysia	70	34	36	64.29	25.98	28
Mexico	30	15	15	50.00		18
New Zealand	47		47	65.96	29.90	30
Norway	40		40	50.00	30.93	25
Pakistan	30		30	46.67	30.77	30
Peru	47	47		48.90	19.94	28
Portugal	55	40	15	47.27	37.80	20
South Africa	68	68		50.00	Unknown	20
South Korea	28	28		65.00	Unknown	23
Spain	83	83		77.11	18.80	28
Sweden	40	40		72.50	26.72	18
Switzerland (Swiss-French)	33	23	10	51.52	27.58	24
Switzerland (Swiss-Germans)	61	31	30	50.82	26.07	27
Switzerland (Swiss-Italians)	49	35	14	63.27	20.22	28
Turkey	30		30	33.33	36.60	20
Uganda	30	30	Unknown	50.82	Unknown	19
United States	34		34	70.59	Unknown	23

UMSA, Universidad Mayor de San Andres; UPB-CB, Universidad Privada Boliviana-Cochabamba.