Table 2.

Spearman Correlations Between α, Q₀ , P_max , and O_max Values Derived From Equation 1 From the Hypothetical Purchase Task (HPT) and the Scores on the Fagerström Test of Nicotine Dependence (FTND), Minnesota Nicotine Withdrawal Scale (MNWS), Questionnaire of Smoking Urges (QSU), and Perceived Stress Scale (PSS)

	FTND	MNWS	QSU	PSS
HPT
α	−0.29	−0.09	−0.44*	−0.15
Q0	0.46*	0.18	0.37	0.24
Pmax	0.17	0.08	0.40*	0.15
Omax	0.29	0.09	0.44*	0.15
Purchases at $0.13	0.50*	0.15	0.40*	0.08
Purchases at $0.12
Real	0.63*	0.01	0.05	0.15
Potentially real	0.54*	−0.04	0.23	0.08

Correlations with these measures and purchases at the lowest price of the real and potentially real tasks, as well as a comparable price on the HPT, are also included.

*Significant correlations.