Table 1. Regression models predicting 3 measures of in-group preference by government effectiveness, pathogen stress, and dominant religion (Coefficients are standardized betas).

	Collectivism			Ingroup Favoritism			Strength of Family Ties
	N = 72			N = 121			N = 71
	1	2	3	1	2	3	1	2	3
Government Effectiveness (GE)	−0.47***	−0.52***	−.031*	−0.72***	−0.75***	−0.63***	−0.35*	−0.36***	−.08
Pathogen Stress (PS)	0.34*	−0.01	−0.06	0.03	0.05	−0.01	0.45***	0.14	0.13
Religion
Catholic			–			–			–
Protestant			−0.27**			−0.33***			−0.33*
Orthodox			0.14			0.05			0.08
Islam			0.09			−0.08			0.30*
Eastern			−0.03			−0.08			−0.08
Jewish			0.02			−0.09			–
Adjusted R2	0.52	0.66	0.72	0.53	0.57	0.64	0.43	0.53	0.63
ΔR2 from adding GE & PS	–	0.17	0.03	–	0.48	0.22	–	0.13	0.00

^*p<0.05,

^**p<0.005,

^***p<0.001.

Models 2 and 3 include regional controls. ΔR² is the increase in adjusted R² when adding Government Effectiveness and Pathogen Stress Base Model.