Table 2.

Descriptive statistics and correlation matrix of the independent variables

Variable	N	Mean	Median	SD	1	2	3
1. Temporal discounting	672	5.16	4.00	5.34	−
2. Risk taking	676	6.61	4.00	6.74	0.05	−
3. Mini-K	666	0.35	0.38	0.84	−0.02	0.04	−
4. Childhood SES	687	4.61	4.67	1.57	−0.06	0.01	0.26***

*** p < 0.001.