Table 2.

Factor loadings and inter-factor correlations from the full sample. Significant factor loadings are bolded. In the full sample, a 4-factor solution was supported both for mean and dose responses representing the following SR domains: Stimulation/Hedonia, Craving/Motivation, Sedation/Motor Intoxication, and Negative Affect.

	Ascending Limb Mean Response				Ascending Limb Dose Response
	Factor 1	Factor 2	Factor 3	Factor 4	Factor 1	Factor 2	Factor 3	Factor 4
BAES Stimulation	0.75	0.11	0.14	0.11	0.48	0.24	0.10	0.06
POMS Pos. Mood	0.61	0.02	0.18	− 0.44	0.63	0.10	0.10	−0.17
POMS Vigor	0.99	−0.02	−0.08	0.04	0.85	−0.09	−0.06	0.04
AUQ	0.04	0.56	−0.04	0.09	0.18	0.12	0.43	−0.01
Liking	−0.02	0.89	0.09	−0.03	0.29	0.27	0.38	0.08
Wanting	0.02	0.81	−0.09	0.00	−0.06	−0.06	0.85	−0.01
BAES Sedation	0.01	−0.05	0.94	−0.01	−0.15	0.74	−0.07	−0.03
SHAS	0.00	0.10	0.88	0.07	0.05	0.91	0.01	0.02
POMS Tension	0.09	0.00	0.01	0.90	0.00	0.00	0.00	0.87
POMS Neg. Mood	−0.11	−0.06	0.20	0.66	−0.30	0.09	−0.02	0.33
	Inter-factor Correlations				Inter-factor Correlations
		Factor 1	Factor 2	Factor 3		Factor 1	Factor 2	Factor 3
	Factor 2	0.33			Factor 2	0.14
	Factor 3	0.29	0.42		Factor 3	0.31	0.22
	Factor 4	−0.22	−0.11	0.21	Factor 4	−0.10	0.06	−0. 10