Table 2.

Summary of regression analyses of PSQ index.

	Model 1			Model 2			Model 3
Variable	β	t	p	β	t	p	β	t	p
Age	0.070	1.29	0.197	0.073	1.35		–0.037	–0.85	0.396
Sex (female = 1)	0.093	1.71	0.087	0.093	1.73	0.085	0.034	0.88	0.429
COMT (Val/Val = 1)				0.115∗	2.14	0.033	0.032	0.73	0.447
Past Positive							–0.149*	–3.15	0.002
Past Negative							0.225*	3.97	0.000
Present Hedonistic							–0.054	–1.15	0.253
Present Fatalistic							0.039	0.72	0.470
Future Positive							–0.054	–1.32	0.253
Future Negative							0.446*	7.18	0.000
Total R2				0.027			0.425
ΔR2	0.014			0.013			0.398
p-value (Fchange)	0.095			0.033			0.000

^∗p < 0.05.