Participants, both with and without depression, use diaries and saliva samples and wear an accelerometer three times a day for thirty days in a row. This gives detailed information on thoughts, behaviour and depression related physiological markers.
Using time sequence analyses we then test which variables influence the day to day mood and vice versa, how strong the connections are between the variables and on what time scale they exert their influence. We take into account that there can be other mutual connections for each individual and that there may be complex interactions between various factors.
Beside gathering knowledge on the cause and course of mood problems, we also hope to provide each participant with a tailor-made (lifestyle) advice to improve their day-to-day mood. This way we hope to create a bridge between research and practice.