In both conditions, pre- and postassessments were held 1 week apart. Between these first two assessment points, the group intervention was delivered to those in the ACT condition, while those in the TAU group attended their normal program. Sixteen cohorts participated in the study, half assigned to each condition. Cohorts varied in size from three to 17, with ACT groups having from five to 17 individuals. Participants also completed a 4-month follow-up. Participants received department store gift certificates for completing assessments, valued at $5 for the preassessment, $10 for the postassessment, and $45 for the follow-up.
