The effects of positive psychology, cognitive reappraisal, and acceptance and commitment therapy interventions in daily life: a micro randomized trial
Method Stream: Longitudinal Intensive Methods
ECs: Both 14 and 23 EC thesis possible
Description:
Mental illnesses such as depression and anxiety are highly prevalent and are associated with high socioeconomic burden. Early, low-threshold interventions in high-risk individuals have the potential to prevent (further) development of mental illness. Digital ecological momentary interventions (EMIs) provide accessible and scalable solutions bringing therapy to daily life, but are still often provided a in one-size-fits all manner with little personalization. Just-in-time adaptive interventions (JITAIs) aim to provide the right intervention in the right moment. However, what interventions should be given in which moment and for which person is still insufficiently studied.
The aim is to investigate individual differences in intervention effectiveness (i.e., for whom) and the internal and external context (i.e., when) in which these interventions are most effective. In addition, we will investigate personal and contextual factors that negatively influence compliance to the study protocol (i.e., when not). Finally, as the interventions will stem from different therapeutic traditions (i.e., cognitive behavioral therapy, acceptance and commitment therapy, and positive psychology), we will investigate the mechanisms through which the interventions affect mental health (i.e., how). For this purpose, you will use innovative methodologies, including within-person experiments and micro randomized trials as well as EMIs and experience sampling methodology (aka ecological momentary assessment).
Example research questions may include: what is the efficacy of the JITAIs on mental health-related outcomes? What are the effects of person characteristics on the efficacy? What are the effects of contextual factors on the efficacy? What are factors that influence compliance? Which emotion regulation strategies mediate the effects of the JITAIs on mental health-related outcomes? How do at-risk individuals experience the JITAIs?