Objective: Pain is one of the significant physical manifestations leading to disability. When investigating disability due to painful chronic diseases, either the particular effect of pain is not adequately separated from other symptoms of the disease, or only the focus is on the physical component of the pain. Therefore, the role of cognitive and emotional factors on disability has been reversed. But recently, attention is increasingly drawn to the role of cognitive and emotional factors in the pathophysiology and treatment of pain. The purpose of this study is to investigate the validity and reliability of the Turkish version of the Pain Catastrophizing Scale (PCS) evaluating cognitive characteristics of pain and is to reveal the relationship between the severity of pain, cognitive and emotional factors and disability through a model.