Predictors of Behavioral Obesity Treatment Outcomes

Inclusion Criteria: 1. Age ≥18 years old 2. Obesity (body mass index ≥30 kg/m2) 3. Meets criteria for either the lower SES or higher SES cohort Exclusion Criteria: 1. Not fluent in English 2. Change in income or financial assets exceeding ±75% of federal poverty guideline within the past 12 months, or expected in the next 6 months, if this change would result in reclassification on SES. 3. Previous or planned bariatric surgery, or concurrent engagement in other behavioral or pharmacological treatment for obesity 4. Resides more than 20 miles away from Rush, or planning to move outside of this geographic area during the study period 5. Body mass index ≥60 kg/m2, due to increased injury risk with exercise 6. History of bariatric surgery, or current engagement in another weight loss therapy 7. Lack of reliable access to cell or landline phone 8. Medical contraindications to treatment, including osteoporosis, cognitive impairment (Montreal Cognitive Assessment ≤25), active substance abuse based on the World Health Organization's ASSIST screener, lack of physician clearance for participation, or serious medical illness (e.g., stage 3 or 4 heart failure, cancer, renal failure, etc.)