Panel Study of Income Dynamics (PSID) Series

Investigator(s): Hofferth, Sandra, Frank P. Stafford, Wei-Jun J. Yeung, Greg J. Duncan, Martha S. Hill, James Lepkowski, and James N. Morgan

The Panel Study of Income Dynamics (PSID) series was begun in 1968 to fill the need for a better understanding of the determinants of family income and its changes. Its main sponsors are the National Science Foundation and the National Institute on Aging. The PSID is a longitudinal survey of a representative sample of United States individuals and the families in which they reside. The data were collected annually through 1997, and biennially starting in 1999. ICPSR's holdings consist of three separate PSID data collections. The core data files contain the full span of information collected over the course of the study. The data provide information on economic status, economic behavior, demographics, and attitudes. The investigators hoped to discover whether most short-term changes in economic status are due to forces outside the family or if they can be traced to something in the individual's own background or in the pattern of his or her thinking and behavior. The data are intended to shed light on what causes family income to rise above or fall below the poverty line. PSID data can be used for cross-sectional, longitudinal, and intergenerational analysis and for studying both individuals and families. ICPSR captures the data only periodically and the most current data are on the at the PSID Web site.