MENTAL DISORDER CA N HAVE a significant influence on the daily life of a patient.The Groningen Social Disabilities Schedule (GSDS) has been developed to chart these influences.The study Difficult Roles in vestigates the reliability, validity and practicality of the schedule. It also closely examines the dimensions of the term 'social role functioning' and discusses the changes in the new version of the GSDS that this research has brought about. Zie: Summer