Table 2.

Outcomes of simple mediation analyses from baseline to post-treatment assessing indirect effects of the ACT intervention through process variables on the outcome measure CES-D compared to both control conditions^a

				Bootstrap results for indirect effects (95 % CI)
	c’-path	a-path	b-path	ab	Lower	Upper
ACT vs WLC
Psychological flexibility	−2.81*	4.39***	−0.44***	−1.9220*	−3.22	−1.01
FFMQ - observing	−4.18***	0.76*	−0.73**	−0.5584*	−1.37	−0.09
FFMQ - describing	−4.16***	1.41**	−0.41	−0.5740*	−1.56	−0.04
FFMQ - acting with awareness	−4.73***	0.05	−0.14	−0.0064	−0.34	0.16
FFMQ - non-judging of inner experience	−3.89**	1.43*	−0.59***	−0.8483*	−2.06	−0.04
FFMQ - non-reactivity to inner experience	−3.41**	2.58***	−0.51**	−1.3224*	−2.54	−0.53
ACT vs EW
Psychological flexibility	−2.02	1.89	−0.36***	−0.6816	−1.50	0.09
FFMQ - observing	−2.72*	−0.08	−0.24	0.0184	−0.14	0.40
FFMQ - describing	−2.52*	0.52	−0.36	−0.1872	−0.89	0.07
FFMQ - acting with awareness	−2.70*	−0.53	0.00	−0.0005	−0.00	0.33
FFMQ - non-judging of inner experience	−1.92	0.94	−0.83***	−0.7794	−1.91	0.02
FFMQ - non-reactivity to inner experience	−1.72	1.37**	−0.72***	−0.9876*	−2.12	−0.31

ACT Acceptance and Commitment Therapy, WLC Waiting List Condition, EW Expressive Writing, CES-D Center for Epidemiological Studies – Depression Scale, FFMQ Five Facet Mindfulness Questionnaire

^aValues are unstandardized Betas;* Significant at p < .05; ** Significant at p < .01; *** Significant at p < .001