1. Department of Psychology and Psychotherapy, University Witten/Herdecke, Witten, Germany
2. Nürtingen-Geislingen University (HfWU), Institute of Research and Development in Art Therapies, Nürtingen, Germany
3. Department of Psychiatry and Psychotherapy, Eberhard Karls University, Tübingen, Germany
4. German Center for Neurodegenerative Diseases (DZNE), Tübingen, Germany
5. Section for Dementia Research, Hertie Institute for Clinical Brain Research and Department of Psychiatry and Psychotherapy, Eberhard Karls University, Tübingen, Germany
6. Attentra GmbH, Tübingen, Germany