The purpose of this study is to test the efficacy of an online, self-guided ACT-based narrative intervention for adults currently taking antidepressant medication. To test the effects of LifeStories on depression severity, quality of life, general functioning and psychological inflexibility, the investigators will conduct a randomized controlled trial with two conditions (LifeStories and waitlist control) using a sample of 90 adults currently taking antidepressant medication. Interested individuals will complete a screening survey to determine eligibility. After being informed about the study and potential risks, eligible participants who provide informed consent will be asked to complete a baseline survey. Participants will then be randomized to LifeStories or a waitlist control conditions, each lasting 4 weeks. Those in the waitlist group will be asked to not use other self-help websites or books for four weeks, after which they will be given weekly access to LifeStories modules. Participants in both groups will be asked to complete a midtreatment survey 2 weeks after baseline, and a posttreatment survey 4 weeks after baseline (i.e. after completing the 4-week video intervention for those in the active condition).
This study aims to compare the efficacy of LifeStories on depression symptomatology compared to antidepressant treatment alone, in addition to examining the effect of the intervention on health-related quality of life. Participants will be randomly assigned to either an online ACT-based narrative intervention (Lifestories) or the waitlist control condition (antidepressant treatment alone). It is hypothesized that participants who receive the LifeStories will result in decreased depression and increased quality of life, general functioning and decreased psychological inflexibility compared to the waitlist group.