Data are collected annually, and the data files contain the full span of information collected over the course of the study. PSID data can be used for cross-sectional, longitudinal and intergenerational analyses, and for studying both individuals and families. The study emphasizes the dynamic aspects of economic and demographic behavior, but it contains a wide range of measures, including sociological and psychological ones. These two features greatly enhance the PSID's potential for longitudinal analysis. PSID data files have been disseminated widely throughout the United States and to numerous foreign countries.
Some material is even available in different languages.
Self Administered Questionnaire Supplement.