Aim 1: To test the efficacy of contingency management for patients with hoarding disorder (HD). Hypothesis 1. Participants completing CM will show significant pre- to post-treatment decreases in severity of hoarding symptoms and clinician-rated impairment, and significant increases in quality of life. Exploratory analyses will examine whether effect sizes compare with those of prior trials of cognitive-behavioral therapy (CBT) for HD conducted within our clinic, whether problem severity at follow-up is predicted by hoarding severity measured immediately after treatment completion, and whether readiness for change improves with treatment.
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Hoarding Rating Scale (HRS)
Timeframe: Change from week 1 (pre) to week 16 (post)
Clutter Image Rating Scale
Timeframe: Change from week 1 (pre) to week 16 (post)