1. Department of Psychology, Liverpool Hope University, Liverpool, UK
2. School of Health Sciences, College of Medicine and Health, Bangor University, Bangor, UK
3. Department of Psychology, Università Cattolica del Sacro Cuore, Milan, Italy
4. Depression Research Centre of the German Depression Foundation, Department for Psychiatry, Psychosomatics and Psychotherapy, Goethe University, Frankfurt, Germany
5. School of Psychology and Sports Science, College of Medicine and Health, Bangor University, Bangor, UK