. 2019 Apr 7;53(11):988–998. doi: 10.1093/abm/kaz010

Table 2.

Correlations, means (M), and standard deviations (SD) of key constructs by treatment condition

	1.	2.	3.	4.	5.	6.	7.	8.	9.	10.	11.	12.	13.	14.
1. Sex (female)	1.00	−.10^a	−.08^a	−.13^a	.01^a	−.10^a	−.05^a	−.12^a	.24^a	−.09^a	−.09^a	.25^a	.03^a	.20^a
2. Age	.20^a	1.00	.25*	.08	−.06	−.01	.09	−.05	−.02	−.14	−.13	<.01	−.03	−.09
3. Income	−.06^a	−.07	1.00	.23	.06	−.01	.10	−.09	−.01	−.09	−.07	−.15	−.13	−.11
4. Attendance	−.01^a	.30*	.11	1.00	.11	−.13	.20	.27	−.27	.14	−.03	−.20	−.06	−.43**
5. T1 TOH	−.24*^a	.07	.13	.18	1.00	.51**	.37**	.43**	.12	.21	.06	−.19	−.01	−.26
6. T2 TOH	−.30*^a	.11	<.01	.11	.61**	1.00	.19	.17	.25	.33*	.32*	−.15	.17	−.23
7. T1 HVLT-R	.05^a	.12	.13	−.12	.24*	.22	1.00	.68**	.22	.20	−.15	−.34*	−.34*	−.57**
8. T2 HVLT-R	.24^a	.09	.10	.11	.10	.09	.47**	1.00	.23	.49**	.14	−.09	−.04	−.38*
9. T1 LNS	.09^a	.14	.06	.06	.39**	.37**	.39**	.44**	1.00	.55**	.14	.30	.11	.08
10. T2 LNS	.06^a	.03	−.41	.01	.30*	.16	.28*	.14	.37**	1.00	.49**	.09	.18	−.26
11. T1 DD ($50)	.09^a	.07	−.20	−.06	−.02	.07	−.02	.06	.22	.08	1.00	.31	.72**	.15
12. T2 DD ($50)	.25^a	.01	.36**	−.02	.06	−.15	−.07	.21	.11	−.14	.27	1.00	.55**	.78**
13. T1 DD ($1,000)	.13^a	.05	−.14	.08	−.18	.10	−.17	.91	.12	.08	.66**	.32*	1.00	.49*
14. T2 DD ($1,000)	.23^a	.04	.12	−.06	−.06	<.01	−.06	.17	.10	−.02	.41**	.68**	.58**	1.00
M (SD) Active Condition	0.59 (0.49)	50.04 (5.82)	1.37 (0.91)	10.00 (5.53)	6.99 (3.55)	9.02 (3.67)	35.19 (12.49)	39.77 (11.34)	7.07 (2.64)	7.19 (2.39)	−3.46 (2.75)	−3.65 (2.81)	−4.36 (3.79)	−4.73 (3.06)
M (SD) Control Condition	0.51 (0.50)	51.24 (5.72)	1.21 (0.54)	9.02 (6.09)	7.32 (3.53)	7.24 (3.71)	35.31 (10.76)	37.88 (9.56)	6.74 (2.38)	6.29 (2.83)	−4.19 (3.36)	−4.19 (3.16)	−4.31 (4.09)	−4.31 (3.92)

Correlations among study variables for the control condition are listed in the top right (above the diagonal) and correlations for the active condition are listed in the bottom left (below the diagonal). Sex is coded 0 = female, 1 = male. T1 = pretraining, T2 = post-training.

DD delay discounting; HVLT-R Hopkins Verbal Learning Test—Revised; LNS Letter Number Sequencing; TOH Tower of Hanoi.

^aPoint-biserial correlation coefficients; all other correlations are Pearson product-moment correlation coefficients.

*p < .05; **p < .01.