Table 1.

Results of the final multilevel modeling analysis.

		Parameter	Value	Standard Error
Fixed Effects
Composite Model	Intercept	γ00	10.18***	0.64
	Epoch (linear term)	γ10	− 0.57***	0.02
	Epoch2 (quadratic term)	γ20	0.01***	0.0004
	Epoch3 (cubic term)	γ30	− 0.00006***	0.000003
	Smoking Condition	γ01	0.29	0.23
	Smoking Condition × Epoch	γ11	0.03*	0.01
	Smoking Condition × Epoch2	γ21	− 0.0004**	0.0001
Variance Components
Level 1:	Within-session	${\sigma }_{\epsilon }^2$	8.57***	0.16
Level 2:	Intercept	${\sigma }_0^2$	11.88***	3.02
	Epoch (linear term) variance	${\sigma }_1^2$	0.002***	0.001
	covar with intercept	${\sigma }_{01}^2$	− 0.16***	0.04

^*p < .05,

^**p < .01,

^***p < .001