The Center for Epidemiologic Studies Depression Scale Revised
Everyone occasionally feels blue or sad, but these feelings usually go away within a few hours or a couple of days. When people have a depressive disorder, they feel really sad for a long time and cannot shake this feeling. They also often have problems with sleeping, trouble with appetite, feel tired a lot of the time, and have problems concentrating. Depressive disorder interferes with their ability to do things in their lives that they normally can do well; and it causes pain for both the people with the disorder and those who care about them. Depressive disorder is a common but serious illness. Many people never seek treatment for their depression, but most people who experience depression feel better if they get treatment.
The CESD-R is a freely available screening test for depression and depressive disorder. It was developed in partnership with Dr. William Eaton at the Johns Hopkins Bloomberg School of Public Health, Department of Mental Health.