Objective: Fibromyalgia (FMS) is characterized by chronic pain, high psychiatric comorbidity, and the absence of observable pathology. Our objective was to examine positive and negative affective indices, both at the trait and contextual levels, in FMS compared to a chronic pain control group, osteoarthritis (OA). Methods: The sample consisted of 126 female FMS (87) and OA (39) patients from th...
