Happiness Research Organisation

Focus on Happiness

The Happiness Research Organisation (HRO) is an independent research institute, based in Düsseldorf Germany, that is specialized in app-based studies with a focus on constructs such as satisfaction, subjective well-being, happiness and quality of life.



HRO works with renowned universities (e.g. Freie Universität Berlin or University College London), big research institutes (e.g. Infratest or Kantar), impactful public institutions (e.g. German Institute for Economic Research or Statistics Netherlands) and world-leading corporates (e.g. Lufthansa or Amazon).

The project teams mainly consist of psychologists, computer scientists and economists.

The scientific board consists of different highly renowned researchers depending on the project to secure highest scientific and ethical standards.

Various cooperation partners from our academic and corporate network broaden our service portfolio.


Dr. Kai Ludwigs

Founder & Director

Dr. Kai Ludwigs is a studied psychologist and studied economist. During his studies he thought about how constructs such as happiness, well-being and quality of life could be measured using modern technologies. Today he is an internationally renowned expert in the areas of well-being research, positive psychology, time-use and happiness research. He is a board member of the International Society for Quality of Life Studies (ISQOLS).

Stephan Erdtmann

Co-Founder & Head of IT

Stephan Erdtmann is a studied computer scientist. In 2012 his long-term friend, Kai Ludwigs, asked him if he could imagine building a research app to measure happiness. Since this day Mr. Erdtmann is doing app-based studies and is an internationally renowned expert in this field.