Therapists ( N = 56 ) from ten community-based mental health service organizations in California were trained in either a three-day workshop model ( N = 25 ) , based on active , experiential , self-reflective , principle-based learning , video modeling , and manuals , or an enhanced training model ( N = 31 ) that included all elements of the workshop model plus ongoing expert coaching , video review of and feedback on group sessions , and consultation for therapists and agency supervisors .