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PSID
The Panel Study of Income Dynamics (PSID) is the longest running longitudinal household survey in the world. The study began in 1968 with a nationally representative sample of over 18,000 individuals living in 5,000 families ...
GSOEP
The German Socio-Economic Panel (GSOEP) is an interdisciplinary longitudinal study of private households for the representative analysis and interpretation of social and economic behavior in the Federal Republic of Germany. ...