Is in-group bias culture-dependent? A meta-analysis across 18 societies

SpringerPlus

Table 1 Mean in-group bias per country, standard errors, 95 % confidence intervals and number of samples

	Mean in-group bias	Standard error	−95 % confidence interval	+95 % confidence interval	Number of samples
Australia	0.51	0.11	0.29	0.73	7
Belgium	0.57	0.18	0.22	0.92	3
Canada	0.24	0.09	0.05	0.42	10
Finland	0.66	0.17	0.33	0.98	3
Germany	0.37	0.05	0.27	0.47	45
Israel	0.31	0.13	0.05	0.58	5
Italy	0.61	0.11	0.38	0.83	7
Japan	0.31	0.27	−0.23	0.84	2
South Korea	0.45	0.15	0.14	0.75	4
Mexico	0.28	0.19	−0.09	0.64	3
Netherlands	0.39	0.09	0.21	0.56	11
New Zealand	0.45	0.10	0.25	0.65	8
Portugal	0.99	0.25	0.51	1.48	2
South Africa	0.27	0.22	−0.16	0.70	2
Spain	0.55	0.31	−0.06	1.15	1
Sweden	0.22	0.21	−0.19	0.62	2
UK	0.23	0.04	0.16	0.30	80
USA	0.46	0.04	0.39	0.53	74