Objective - This paper reports on sensitivity, and content validity of the Verona Expectations for Care Scale (VECS) and the Verona Service Satisfaction Scale (VSSS), two newly developed, multidimensional instruments which measure expectations and satisfaction with community-based psychiatric services (CPS) in patients and their rela- tives. Instruments - VECS and VSSS consist of various sections and include questions eliciting spontaneous answers and an 82-item multidimensional questionnaire on various aspects of clients' interaction with psychiatric services. Setting - The South-Verona community-based psychiatric service. Subiects - The patients were selected among those who, ac- cording to the South-Verona Psychiatric Case Register, were living with their families in the South-Verona catchment area and had had more than 18 contacts with the South-Verona CPS in the three years preceeding the interview. For each patient, the relative identified by professionals and patients as primarily involved in caring for the patient in the given period was asked to participate. Results - We demonstrated the higher sensitivity of VECS and VSSS question- naires compared to unstructured interviews in measuring service expectations and satisfaction and the higher sensitivity of a domain-specific measurement vs. an overall one. VECS and VSSS proved to be sensitive to variation both between groups and across dimensions. Content validity of the questionnaires, according to patients and relatives views, was very good; moreover we demonstrated that a key-characteristic of content validity is the questionnaire's multidimension- ality. Conclusions - The findings presented in this and in a companion paper demonstrate that it is possible to measure subjective aspects of the interaction with a psychiatric service such as expectations and satisfaction in an acceptable, reliable, sensitive and valid way and that VECS and VSSS have good psychometric properties.