The Data Documentation Initiative (DDI)

The Data Documentation Initiative (DDI) is a standard for organizing and describing research data, especially survey and social science data. It provides a structured framework to document data’s content, methodology, and quality, making it easier for researchers and organizations to find, understand, and reuse data efficiently. By using DDI, data creators ensure their data is well-documented and accessible, supporting transparency, data sharing, and long-term preservation across research disciplines.