Training-induced devaluation effect lasts up to 1 month
’ behavior
Our intervention was fully online with limited control over participants’ behavior. While the training app guided the participants through the steps of the study, the pace of the training was only encouraged and never enforced. As a result, 60 (35%) participants filled the post-intervention questionnaires up to 41 days after their last day of training (median [Q1–Q3] = 9 [4–16.5] days). We exploited this variability of the delay between the post-intervention questionnaires and the last day of training to assess the persistence of the training’s effect. A linear fit shows no evidence of an effect of the delay on the decrease in unhealthy valuation (b