Table A4.

Descriptive statistics by independent sampling wave.

	Baseline			Wave 1			Wave 2
	mean	sd.		mean	sd.		mean	sd.
Dictator game [0,5]	1.45	1.08		1.58	1.07		1.67	1.05
Stag Hunt game {0,1}	0.88	0.33		0.84	0.37		0.82	0.39
Prisoner’s Dilemma game {0,1}	0.31	0.46		$0.{49}^{\mathbf{A}}$	0.50		$0.{46}^A$	0.50
Trust game sent [0,8]	3.39	2.59		$1.{75}^A$	1.80		$4.{95}^A$	2.48
Ultimatum game offer [0,8]	3.08	1.04		3.36	1.21		3.16	1.31
Risk attitude, gain {1,2,...,10}	4.45	1.13		$4.{67}^a$	0.86		$4.{92}^{\mathbf{A}}$	1.47
Risk attitude, loss {1,2,...,10}	6.42	1.14		6.29	0.98		$6.{19}^A$	1.18
Ambiguity attitude {1,2,...,10}	4.49	1.33		$4.{15}^A$	1.4		$3.{93}^{\mathbf{A}}$	1.46
Number of subjects	206			80			78
	Wave 3			Wave 4			Wave 5
	mean	sd.		mean	sd.		mean	sd.
Dictator game [0,5]	1.44	1.01		1.65	1.12		$1.{95}^A$	1.04
Stag Hunt game {0,1}	$0.{70}^{\mathbf{A}}$	0.46		$0.{71}^{\mathbf{A}}$	0.46		0.80	0.40
Prisoner’s Dilemma game {0,1}	0.39	0.49		$0.{32}^c$	0.47		0.49	0.50
Trust game sent [0,8]	$3.6^c$	2.44		3.66	2.73		$4.{43}^{\mathbf{B}}$	2.59
Ultimatum game offer [0,8]	3.38	1.04		3.05	1.28		$3.{58}^A$	1.23
Risk attitude, gain {1,2,...,10}	$4.{26}^{\mathbf{C}}$	1.18		4.71	1.42		$4.{95}^{\mathbf{A}}$	1.58
Risk attitude, loss {1,2,...,10}	$6.{12}^A$	1.31		$6.{50}^c$	1.00		6.28	1.34
Ambiguity attitude {1,2,...,10}	$4.{18}^{\mathbf{A}}$	1.75		4.41	1.55		$4.{47}^C$	1.55
Number of subjects	80			78			80

The following tests are two-tailed Wilcoxon rank-sum tests. Note:${}^{a}p<0.1$, ${}^{A}p<0.05$, ${}^{\mathbf{A}}p<0.01$ for comparison of means Wave versus Baseline. ${}^{b}p<0.1$, ${}^{B}p<0.05$, ${}^{\mathbf{B}}p<0.01$ for comparison of means Wave 5 versus Wave 1. ${}^{c}p<0.1$, ${}^{C}p<0.05$, ${}^{\mathbf{C}}p<0.01$ for comparison of means Wave 3/4/5 versus Wave 2.