Table 4.

Correlations among individual differences measures.

	DI	DOSPERT	Adjusted presses	Total amount earned	Coefficient of variation	ART NAcc %sc	ART vmPFC %sc
ART
FI	0.22	0.04	0.18	−0.02	−0.10	−0.27	−0.19
DI	–	0.27	−0.29	−0.19	−0.11	0.54*	0.16
DOSPERT	–	–	−0.41†	−0.53*	−0.17	0.35	0.39†
Adjusted presses	–	–	–	0.74*	0.15	−0.59*	−0.38†
Total amount earned	–	–	–	–	0.14	−0.47*	−0.39†
Coefficient of variation	–	–	–	–	–	0.06	0.17
ART NAcc %sc	–	–	–	–	–	–	0.52*
			Adjusted presses	Total amount earned	Coefficient of variation	BART NAcc %sc	BART vmPFC %sc
BART
FI			0.39+	0.04	−0.52*	0.05	0.007
DI			0.03	0.23	0.17	0.20	−0.23
DOSPERT			−0.21	0.03	0.08	−0.49*	−0.50*
Adjusted presses			–	0.02	−0.42*	0.32	0.22
Total amount earned			–	–	−0.19	0.20	−0.15
Coefficient of variation			–	–	–	−0.19	−0.04
BART NAcc %sc			–	–	–	–	0.56

^*p < 0.05;

^†Trend-level association (p-value between 0.05 and 0.07). %sc = percent signal change.