Training App for Inhibitory Control Towards Food

"Participants will complete one training session per day for the first week and three sessions per week for the following three weeks (4 weeks in total). Each session lasts about 5 minutes and includes 3 blocks of stimuli presentation. In each block, 32 images (8 low-energy-dense foods, 8 high-energy-dense foods, 16 neutral objects) are presented for 1500ms with a 500ms interstimulus interval. One-hundred ms after the image presentation, a red or green circle appears. Participants will have to tap the image when a green circle appears (go trials) and inhibit a response when a red circle appears (no-go trials). Low-energy-dense foods are always paired with go trials, high-energy-dense foods with no-go trials, and neutral objects with either go or no-go trials. After each block, participants receive feedback on mean accuracy and reaction time. Participants can personalise the training by selecting up to three categories of high-energy-dense foods to include."

Participants allocated to the control condition will not have access to the FoodTraining App during the active phase of the study (8 weeks), but will be offered the opportunity to access the app at the end of the 8-week follow-up period. This ensures that all participants, regardless of group allocation, will have the chance to benefit from the intervention once data collection is complete.