Table 4.

Indirect effect of group assignment on client speech via provider speech at the 3-month follow-up

a. Change talk
Variable	Coefficient	95% CI	SE	t	p
Effect of group assignment on reflections of change talk (a path)
Constant	0.265	0.205 0.324	0.030	8.771	.000
Group	−0.013	−0.096 0.071	0.042	−0.302	.764
Effect of reflections of change talk on change talk covarying for group (b path)
Constant	0.413	0.308 0.518	0.053	7.780	.000
RefCT	1.628	1.381 1.874	0.125	13.072	.000
Group	−0.059	−0.174 0.056	0.058	−1.012	.314
Total effect of group on change talk (c path)
Constant	0.844	0.716 0.971	0.064	13.128	.000
Group	−0.080	−0.257 0.098	0.090	−0.886	.377
Direct effect of group on change talk
Group	−0.059	−0.174 0.056	0.058	−1.012	.314
Bootstrapped indirect effect on change talk via reflections of change talk (κ²)
RefCT	−0.030	0.000 0.091	0.056	–	–

b. Sustain talk
Variable	Coefficient	95% CI	SE	t	p
Effect of group assignment on reflections of sustain talk (a path)
Constant	0.110	0.785 0.142	0.016	6.898	.000
Group	−0.047	−0.091 −0.002	0.022	−2.089	.039
Effect of reflections of sustain talk on sustain talk covarying for group (b path)
Constant	0.140	0.065 0.215	0.038	3.681	.003
RefST	0.911	0.551 1.271	0.182	5.001	.000
Group	0.037	−0.054 0.127	0.046	0.804	.423
Total effect of group on sustain talk (c path)
Constant	0.240	0.170 0.303	0.035	6.812	.000
Group	-.006	−.010 0.092	0.049	−0.114	.909
Direct effect of group on sustain talk
Group	0.368	−0.054 0.127	.046	0.804	.423
Bootstrapped indirect effect on sustain talk via reflections of sustain talk (κ²)
RefST	0.083	0.015 0.169	0.039	–	–

Note. RefCT = reflections of change talk; RefST = reflections of sustain talk