The current study will use a full factorial design to identify the independent and combined effects of four core MABT components when combined with standard behavioral treatment for BN and BED. The primary aim of the study will be to evaluate the independent efficacy of Mindful Awareness, Distress Tolerance, Emotion Modulation, and Values-Based Decision Making on eating pathology (at posttreatment and at 6 and 12-month follow-ups). Secondary aims will be (1) to test target engagement of each MABT component, i.e., to confirm that each treatment component impacts both the variable which it targets and self-regulation and that improvements in these are associated with improvements in outcomes and (2) to test the hypotheses that the efficacy of each component is moderated by related baseline deficits in self-regulation (e.g. individuals with worse distress tolerance at baseline are most likely to benefit from conditions that include the Distress Tolerance component). A final exploratory aim will be to quantify the component interaction effects, which may be partially additive (because components overlap and/or there is diminishing return), fully additive, or synergistic (in that components may partially depend on each other).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
256
Change behaviors that maintain binge eating (e.g. rigid dietary restriction outside of binge episodes, irregular or chaotic eating patterns).
Integrates behavioral treatment for eating disorders with a set of psychological strategies, specifically mindful awareness, designed to enhance self-regulation. Mindful awareness strategies include developing inner and outer wisdom, formal meditation, and shifting awareness to the present moment. Mindful awareness skills also include increasing awareness of thoughts, feelings, physical sensations, and hunger and fullness cues.
Integrates behavioral treatment for eating disorders with a set of psychological strategies, specifically values, designed to enhance self-regulation. Values skills include identifying and clarifying values, living a values life, making values-consistent decisions, addressing competing values, values awareness, and using values to address negative moods.
Integrates behavioral treatment for eating disorders with a set of psychological strategies, specifically emotion modulation, designed to enhance self-regulation. Emotion modulation skills include long-term habits for emotion regulation, coping strategies, crisis management, and cognitive reappraisal.
Integrates behavioral treatment for eating disorders with a set of psychological strategies, specifically distress tolerance, designed to enhance self-regulation. Distress tolerance skills include psychological acceptance, uncoupling, willingness, and dealing with dirty distress.
Drexel University, Stratton Hall
Philadelphia, Pennsylvania, United States
Binge eating frequency assessed by the Eating Disorder Examination
Frequency (number of days and number of instances) of binge eating over the past 28 days assessed by the Eating Disorder Examination
Time frame: Changes from each assessment time point throughout treatment (3 assessments over 16 weeks) and 6-month and 1 year post-treatment follow-up assessment
Eating Disorder Examination
The Eating Disorder Examination is a semi-structured interview that measures eating pathology. The EDE yields four subscale scores: Restraint, Eating Concern, Shape Concern, and Weight Concern. The possible score range for each subscale is 0 to 6. The total score may also be reported (determined by averaging the subscale scores); the score range for the total score is also 0 to 6. For subscale scores and total score, higher scores indicate more severe pathology. The restraint sub-scale of the EDE will be used to assess utilization of skills related to reducing dietary restraint.
Time frame: Changes from each assessment time point throughout treatment (3 assessments over 16 weeks) and 6 month and 1 year post-treatment follow-up assessment
Remission Status
Presence or absence of eating disorder diagnosis. Not in remission; in partial remission; or in full remission.
Time frame: Changes from each assessment time point throughout treatment (3 assessments over 16 weeks) and 6 month and 1 year post-treatment follow-up assessment
Compensatory behavior frequency assessed by the Eating Disorder Examination (EDE)
Frequency (number of days and number of instances) of compensatory behaviors assessed by the Eating Disorder Examination
Time frame: Changes from each assessment time point throughout treatment (3 assessments over 16 weeks) and 6 month and 1 year post-treatment follow-up assessment
BMI
kilogram/(meters\^2), this is an outcome measure for participants with anorexia nervosa, binge/purge type
Time frame: Changes from each assessment time point throughout treatment (3 assessments over 16 weeks) and 6 month and 1 year post-treatment follow-up assessment
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