Table 2.

Study 2: Results of the multilevel linear model predicting number of points given to another player in the economic game (German Socio-Economic Panel)

	Player 1		Player 2
Variable	b	P	b	P
Intercept	5.07	<0.001	4.84	<0.001
Household income	0.57	0.005	0.27	0.063
State-level inequality	10.36	0.081	1.08	0.850
Income × Inequality	7.73	0.526	1.03	0.879
Year
2004	0.31	0.006	−0.04	0.735
2005	0.56	<0.001	0.09	0.445
Received by player 1			0.39	<0.001

Model for player 1: 1,781 observations of n = 667 participants, nested in 14 federal German states. Model for player 2: 1,798 observations of n = 667 participants, nested in 13 federal German states. Logarithmized household income and points received by player 1 were grand mean-centered; state-level inequality (Gini index) was centered across states, and the year was dummy-coded with 2003 as the reference year. SEs and z values are provided in SI Appendix, Table S8.