Sensor-based Just-in Time Adaptive Interventions (JITAIs) Targeting Eating Behavior

Inclusion Criteria:

• Body mass index (BMI) between 27 and 45 kg/m-squared

• Weight stable within 5% in the past 6 months

• Self-reports basic familiarity with use of a smartphone

Exclusion Criteria:

• Diagnosed diabetes (type 1 and 2)

• Any poorly controlled medical condition that could affect weight and/or eatingbehavior (e.g., hypothyroidism)

• Medical conditions or use of medications or diets/supplements known to affect energyregulation or appetite

• Difficulty chewing or swallowing

• Diagnosed eating disorder

• Night or shift work

• Current participation in a weight loss program

• History of bariatric surgery

• Current pregnancy or lactation within the past 1 year, or planning a pregnancyduring the study participation period

• Consuming a medically-prescribed or unusual diet (e.g., macrobiotic)

• Food allergies or sensitivities, or other conditions which result in avoidance of awide range of foods (e.g. celiac disease, tree nut allergy)

• Reported recreational drug use

• Report of conditions that would significantly interfere with an ability to followthe protocol including terminal illness, substance abuse, or other significantuncontrolled psychiatric problem