Table 2.

Regression results for three mediation models

Criterion	Path	b	SE	t	p
Cannabis withdrawal severity	a1	1.165	.295	3.95	<.001
	a2	.148	.072	2.06	.044
	d21	.079	.028	2.81	.007
	b1	.006	.059	.103	.918
	b2	.435	.254	1.71	.092
	c′	.434	.146	2.98	.004
	c	.546	.127	4.30	<.0001
Self-efficacy to abstain in psychologically distressing situations	a1	.1.077	.279	3.85	.<.001
	a2	.075	.069	1.10	.277
	d21	.090	.026	3.48	.009
	b1	.007	.008	.875	.385
	b2	−.110	.032	−3.00	<.001
	c′	−.069	.019	−3.73	<.001
	c	−.057	.019	−3.00	.003
Reasons for quitting	a1	1.021	.287	3.56	<.001
	a2	.085	.069	1.24	.220
	d21	.100	.026	3.85	<.001
	b1	.011	.060	.18	.856
	b2	.684	.250	2.73	.007
	c′	.290	.147	1.97	.053
	c	.429	.142	3.03	.003