Feeling sad, down, or depressed on occasion is a normal response. This questionnaire taps the degree to which people are currently experiencing depression. This survey was developed by researchers at the Centers for Disease Control and has been used extensively in large projects for several years. Because it is a self-report measure, it is not as valid as an in-person interview. However, you can use the feedback you receive as a general indicator of depressive mood. If you have any questions about the survey, contact us.