The field of neuroeconomics has begun to elucidate neural mechanisms underlying self-control; however, researchers have not yet harnessed neuroeconomics findings to develop interventions for improving self-control ability. The investigators are currently developing such an intervention. The investigators' approach involves using a brain-computer interface with audiovisual feedback to show people what is happening in their own brains, in real time. Through this interface, individuals are trained to increase levels of neural activity that may facilitate self-control, which, in turn, may improve the ability to exhibit self-controlled behaviors. This may increase the ability to engage in heath behaviors for which self-control is required (eg, dieting and exercising). The investigators' long-term goal is to create a tool that will help people develop the self-control needed to achieve lasting improvements in health behaviors.

Inclusion Criteria:

• Can read and write fluently in English
• At least 18 years of age
• Right-handed
• Overweight or obese (BMI > 24.9)
• Currently has a University of Rochester meal plan
• Currently in contemplation or action stages of change with respect to weight loss (measured with the Weight Stages of Change Algorithm; Rossi, Rossi, Velicer, & Prochaska, 1995).

Exclusion Criteria:

• History of diabetes, epilepsy, celiac disease, lactose intolerance, food allergies, veganism, mental illness, or eating disorders
• Currently taking a medication that may have a strong effect on EEG recordings (eg, an antidepressant, stimulant medication, etc.)
• Currently drinks more than 3 cups of coffee per day or roughly equivalent caffeine intake