Happiness in Flanders: A Randomized, Wait-List Controlled Study

This randomized trial has two aims:

1. First, it investigates the efficacy of two different happiness interventions in increasing feelings of happiness in the Flemish general population using a wait-list controlled design.
2. Second, this study aims to identify predictors of response in both interventions ("what works for whom?")

Methods

Design and procedure

• Participants will be contacted through social media and directed to a website that is specifically designed for this study.
• All participants who register for the study first will electronically sign an informed consent and will be asked to complete a brief battery of questionnaires online (base line measures) before randomization.
• Participants then are assigned randomly using a block-randomized design to one of the three conditions using a computerized algorithm: