Over a period of about one year, group therapy participants were alerted to the study by staff unaffiliated with the treatment center. Participants who indicated interest left group sessions to complete the questionnaire packet in a nearby room. They were given a $10 gift certificate to a national department store chain after completing the survey. After the first nine participants complained of fatigue, we split the packet of measures in half, with each packet containing the demographics form and PSAS along with half of the remaining measures. Approximately half the participants received one packet and half the other and this assignment was made at the time of assessment. Assignment to which packet they would complete was usually alternating, but this was not always consistent. Some participants did not fully complete all the items in a scale and when that occurred, they were excluded from analyses that related to that scale. Four other pilot self-report scales were also included in the packet, with those results reported elsewhere. The shorter packets with about half the scales summarized below took most participants less than an hour to complete. The order of the measures varied somewhat across assessments, but this variation was not systematic.
