Choosing your own digital intervention for recurrent binge eating

INTERVENTION: There are two different digital interventions for binge eating. In this trial, participants will be randomized to one of two groups: (1) they will be provided one of the below two intervention programs at random ("forced"); (2) they will be asked to select which intervention program they would prefer to receive based on a small description of each ("preferred"). The first program will be a internet‐based intervention designed to primarily target extreme dietary restraint as the mechanism to reduce binge eating. The internet intervention is composed of 4 sessions. 1. Psycho‐education: information on what dieting means, when it can become harmful, and why it can promote binge eating. 2. Self‐monitoring: the importance of monitoring behaviors, thoughts, and emotions related to food, eating, and dieting 3. Regular eating: participants taught how to adopt a pattern of regular, flexible eating approach. 4. Food exposure: participants are taught how to overcome fear and anxiety around "forbidden" foods. The second digital intervention will be delivered only via a smartphone app. The app is based on transdiagnostic cognitive‐behavioural therapy (Fairburn, 2008) in that it is designed to target a range of factors implicated in the maintenance of binge eating (e.g., overvaluation with weight/shape, extreme dietary restraint & mood intolerance). There are also 4 modules to this app: 1. Psychoeducation about binge eating and its cycle 2. Implementing self‐monitoring and regular eating 3. Learning healthy coping strategies through acceptance, mindfulness, and problem solving 4. Building a better body image Each session/module of the two interventions will take around 30‐60 minutes to complete, and participants will be encourage CONDITION: Eating disorders;Binge eating; ; Eating disorders ; Binge eating Mental Health ‐ Eating disorders PRIMARY OUTCOME: Eating disorder psychopathology (global scores from the Eating Disorder Examination Questionnaire)[Primary time‐point (post‐test) = 4 weeks after randomization.; ] Objective binge eating frequency over the past 28 days (assessed via a single item from the EDE‐Q).[Primary time‐point (post‐test) = 4 weeks after randomization.] SECONDARY OUTCOME: Anxiety symptoms (PHQ‐2)[ 4 weeks after randomization.] Body appreciation (BAS‐2 3‐item version)[4 weeks after randomization.] Body image flexibility (BIAAQ‐4)[4 weeks after randomization.] Depressive symptoms (PHQ‐2)[ 4 weeks after randomization.] Dietary restraint (EDE‐Q subscale)[4 weeks after randomization.] Eating concerns (EDE‐Q subscale)[4 weeks after randomization.] Functionality appreciation (FAS‐7)[ 4 weeks after randomization.] shape concerns (EDE‐Q subscale)[ 4 weeks after randomization.] Subjective binge eating frequency (single EDE‐Q item)[4 weeks after randomization.] Weight concerns (EDE‐Q subscale)[ 4 weeks after randomization.] INCLUSION CRITERIA: Participants must: 1) Be aged 18 years or over 2) Have access to the internet or smartphone 3) Experience the presence of recurrent binge eating, defined as binge eating at least once per fortnight, on average, over the past 3 months via self‐report.