An interventional study of Interpretation Bias Modification and Progressive Muscle Relaxation in Body Dysmorphic Disorder, sponsored by Florida State University. Completed at 1 site in United States. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2021-01-29.
Sponsored by Florida State University · Not applicable, Interventional, and Treatment
The purpose of this study is to determine whether a computerized intervention designed to reduce appearance and evaluation related interpretation biases will reduce symptoms associated with body dysmorphic disorder.
The present study aims to examine the feasibility of a remote treatment for body dysmorphic disorder delivered via the Internet. To evaluate the efficacy of the IBM protocol we have developed in reducing negative appearance and evaluative related interpretations, we will conduct a two-arm randomized controlled trial over the internet. Individuals with a diagnosis of body dysmorphic disorder (N = 40) will be randomized to one of two conditions: 1) IBM or 2) progressive muscle relaxation. Each condition will consist of eight 10-25 minute treatment sessions. Participants will complete two sessions per week for four weeks and will be administered assessments at pre-treatment, one week post-treatment and at 3-month follow-up. We hypothesize that: 1) IBM will lead to greater reductions in BDD symptoms than the PMR condition; 2) IBM will lead to greater reductions in depression, anxiety and suicidal ideation than the PMR condition; 3) IBM will lead to greater reductions in threat interpretations and greater increases in benign interpretations than the PMR condition; 4) The effects of condition on BDD symptoms will be mediated by changes in BDD-related interpretation bias; and 5) The effects of training in the IBM condition will be maintained at the 3-month follow-up assessments.
Exclusion Criteria:
Treatment consists of eight brief sessions. In Task 1, participants read unique scenarios ("You notice someone pointing in your direction"). A sentence meant to resolve the ambiguity will appear ("This person thinks they reco_nize you"). After filling in the missing letter, the interpretation is reinforced by requiring the participants to correctly answer "yes" or "no" to a comprehension question ("Is this person mocking you?"). In Task 2, participants are shown a word denoting a threatening ("mocking") or benign ("cheerful") interpretation. Participants are presented with an ambiguous scenario ("You hear people at a nearby table laughing") and asked to denote whether the word and the sentence are related. Participants will receive positive or negative feedback based on their response.
Behavioral: Interpretation Bias Modification
Participants will receive eight brief sessions of PMR. They will listen to a PMR script (Kassinove \& Tafrate, 2002). Participants will be asked to make sure they are sitting comfortably, close their eyes, and systematically tense and release 10 different muscle groups.
Behavioral: Progressive Muscle Relaxation
Eight 10-25 minute sessions of interpretation modification to reduce negative interpretation biases related to appearance.
Eight 15-minute sessions of progressive muscle relaxation (PMR).
Yale-Brown Obsessive Compulsive Scale Modified for Body Dysmorphic Disorder (BDD-YBOCS; Phillips et al., 1997)
Measures past-week BDD symptom severity
Time frame: change from baseline at one-week post treatment and 3-months post-treatment
Beck Depression Inventory (BDI-II; Beck, Steer, & Brown, 1996)
Measures depressive symptom severity
Time frame: change from baseline at one-week post treatment and 3-months post-treatment
Beck Anxiety Inventory (BAI; Steer & Beck, 1997)
Measure anxious symptom severity
Time frame: change from baseline at one-week post treatment and 3-months post-treatment
Depressive Symptom Index-Suicidality Subscale
Measure severity of recent suicidality
Time frame: change from baseline at one-week post treatment and 3-months post-treatment
Body Dysmorphic Disorder Word Sentence Association Paradigm (BDD-WSAP; modified from Hindash & Amir, 2011)
Measure of strength of BDD-related (i.e. evaluation- and appearance- related threat interpretation biases)
Time frame: change from baseline at one-week post treatment and 3-months post-treatment
Plan to share: Undecided
This study is completed, as verified in Jan 2021. You cannot join it, but the record below documents what was studied.
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Florida State University