Part 6, Relationship History File, 1968-1985 (Waves 1-18), presents information on pairs of individuals who were members of family units descended from a common, original family in the 1968 sample. Variables in this file include the identifiers for each individual and his/her spouse, month and year of marriage/divorce/widowhood, order of the specific marriage, total number of marriages, and the most recent year wave when data were collected. Each record contains all past-year and most-recent-year details about the timing and circumstances of a marriage for a specified individual. This file contains detailed information about marriages of people of marriage-eligible ages living in a PSID family at the time of the interview in any wave between 19. Part 5, the Marriage History File, 1985-1999 (Waves 18-31), was designed to facilitate access to detailed information collected in the 1985 through 1999 waves of the PSID regarding retrospective marriage histories. Part 4, the Time and Money Transfers Supplement File, 1988, was designed to facilitate access to the detailed information collected in the 1988 wave of the PSID regarding transfers, in the form of time and money, between a PSID family unit and other persons during the 1987 calendar year. Questionnaire results were compared to company records to verify respondents' answers to questions such as hours worked, sick time taken, periods of unemployment, and changes of position within the company. For the Validation Study, the standard PSID questionnaire was administered to a sample drawn from a single large manufacturing firm. The first wave of the Validation Study was conducted in 1983 and a second wave was conducted in 1987. Part 3, the Validation Study, was designed to assess the quality of cross-sectional and over-time economic data obtained in the PSID.
Part 2, the 1984-1987 Work History Supplement File, contains more detailed information on individual employment histories than is presented in the core files, including multiple job changes. Part 1, the 1985 Ego-Alter File, presents information on retrospective histories of marriage, childbirth, adoption, and substitute parenting. Supplemental information on additional topics, such as flows of time and money, help among families and their friends, and motivation and efficacy, is gathered on an intermittent basis. Supplemental datasets, each with detailed information about a particular topic collected over the years, are released separately from the core files (PANEL STUDY OF INCOME DYNAMICS, 1968-1999: ANNUAL CORE DATA ). In more recent years, special topics have included extensive supplements on education, military combat experience, health, kinship networks, and wealth. In the early years, respondents were asked supplemental questions about their housing and neighborhood characteristics, child care, achievement motivation, job training, and retirement plans. Specifically, they deal with topics such as employment, income sources and amounts, housing, car ownership, food expenditures, transportation, do-it-yourself home maintenance and car repairs, education, disability, time use, family background, family composition changes, and residential location. In line with the theoretical model, the questions asked fall generally under the headings of economic status, economic behavior, demographics, and attitudes. The data can shed light on what causes family income to rise above or fall below the poverty line. 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 PSID has continued to trace individuals from the original national sample of approximately 4,800 households, whether those individuals are living in the same dwelling or with the same people.
The Panel Study of Income Dynamics (PSID) is an ongoing data collection effort begun in 1968 in an attempt to fill the need for a better understanding of the determinants of family income and its changes. ***Note: This information is correct as of the last updates to these files ***
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