Results showed that both linear and robust regressions were highly significant (linear regression: beta = 0.60, p = 0.001, effect size = 0.94; robust regression: beta = 0.20, p = 0.004) thus indicating that the internal connectivity of the identified regions significantly correlated with discounting behavior.
With the exception of the non-significant difference between the DMN and the single system ( X 2 = 2.54 p = 0.1) and the DMN and the δ-Single between-network connectivity (X 2 = 1.53 p = 0.2) which was likely explained by the relatively large overlap between the DMN and the single system, the results showed that the difference between the fc-behavior correlation coefficients of the two sets of networks was significant (or marginally significant) (Single-SMN: X 2 = 3.6, p< 0.05; Single-VN: X 2 = 5.69, p< 0.05; β-Single –DMN: X 2 = 4.78 p< 0.05; β-Single –SMN: X 2 = 6.64 p< 0.01; β-Single –VN: X 2 = 9.56 p< 0.01; δ-Single – SMN:: X 2 = 3.38 p = 0.06; δ-Single – SMN:: X 2 = 5.52 p< 0.05).