David A Vermeersch

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Patient-focused research attempts to provide information that answers the question: Is this treatment benefiting this patient? Although several systems have been developed to monitor and provide feedback about a patient's response to psychotherapy, few if any have been tested empirically. The current study divided 609 patients into four groups (two(More)
This study examined data collected on over 5,000 clients seen by 71 therapists over a 6-year period in a University Counseling Center. Clients were given the Outcome Questionnaire-45 (OQ-45) on a session-by-session basis to track their treatment response. Data were also collected on therapists' theoretical orientation, years of experience, gender, and type(More)
Although high levels of reliability are emphasized in the construction of many measures of psychological traits, tests that are intended to measure patient change following psychotherapy need to emphasize sensitivity to change as a central and primary property. This study proposes 2 criteria for evaluating the degree to which an item on a test is sensitive(More)
This study examined sources of therapist effects in a sample of 25 therapists who saw 1,141 clients at a university counseling center. Clients completed the Outcome Questionnaire-45 (OQ-45) at each session. Therapists' facilitative interpersonal skills (FIS) were assessed with a performance task that measures therapists' interpersonal skills by rating(More)
This study extends previous research evaluating the association between the CHIP intervention, change in body weight, and change in psychological health. A randomized controlled health intervention study lasting 4 wk. was used with 348 participants from metropolitan Rockford, Illinois; ages ranged from 24 to 81 yr. Participants were assessed at baseline, 6(More)
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