Table 1.

Linear regression model predicting change in delay discounting following cognitive challenge. For each change measure, change is calculated as post-4-back DD − post-1-back DD. Change in delay discounting = post-4-back log(k) − post-1-back log(k). rDLPFC and amygdala ROIs were defined anatomically and mean contrast values were used as regressors.

Predictors	Standardized beta coefficients
Change in DLPFC (right) activation	−0.412*
Change in amygdala (bilateral) activation	0.675**
4-back accuracy	−0.669**
—	—
Adjusted R2	0.696***

^*p < 0.05 significance.

^**p < 0.01 significance.

^***p < 0.005 significance.