Experience Sampling Method (ESM)
Large national crowdsourcing study into child and adolescent mental health and well-being.
Major Depressive Disorder (MDD) is the leading cause of disability worldwide. The cardinal features of MDD are depressed mood and anhedonia. Anhedonia is defined as a markedly diminished interest or pleasure in all, or almost all, activities of the day, and has generally been investigated on group-level using retrospective data (e.