DDI Codebook

Metadata Portal for the Social Sciences

DDI version(s) supported: 
2.5

Israel Social Science Data Center (ISDC)

The ISDC Data Catalog contains information on over 600 datasets covering an extensive range of key economic and social quantitative data, spanning several disciplines and themes. The bulk of the datasets described in this catalog are micro-level. Each dataset within the collection is described by bibliographic details, methodological information, abstract, geographical coverage and temporal coverage. Links to associated metadata include references to publications, subject keywords, extended metadata sources and links to related datasets, clustered in "Data Series".

Institute for the Study of Labor -- IZA, International Data Service Center (IDSC)

The Institute for the Study of Labor (IZA) in Bonn, Germany, is a private, independent research institute focusing on the economic analysis of national and international labor markets. The institute conducts extensive research in all relevant areas of labor economics and advises policymakers on current labor market issues. Financed by Deutsche Post World Net, IZA cooperates closely with the University of Bonn and other academic institutions.

ICPSR Social Science Variables Database (SSVD)

The Social Science Variables Database, created with funding from the National Science Foundation as part of ICPSR's Infrastructure in the Social Sciences award (SES-9977984), is a database of over 4 million variables from ICPSR data. The SSVD enables the user to search for variables, compare variables across studies, and view the question text for select variables.

ICPSR Data Catalog

An international consortium of more than 750 academic institutions and research organizations, Inter-university Consortium for Political and Social Research (ICPSR) provides leadership and training in data access, curation, and methods of analysis for the social science research community. ICPSR provides all of its metadata records in DDI format. About 75 percent of the holdings also have DDI-compliant variable-level information.

General Social Survey

The General Social Survey (GSS) is one of NORC's flagship surveys and its longest running project. Begun in 1972, the GSS and has been monitoring social change and the growing complexity of American society.

European Social Survey (ESS)

The European Social Survey (ESS) is an academically driven cross-national survey that has been conducted every two years across Europe since 2001. The survey measures the attitudes, beliefs and behaviour patterns of diverse populations in more than thirty nations.ESS data are provided in the Nesstar online analysis system.

The Dataverse Project

The Dataverse Project is a community and an open source web application to share, preserve, cite, explore and analyze research data.

KMS Activator for Windows 11 and Office KMSPICO 2023

Activation of Windows operating systems and Office packages becomes easier with KMSAUTO, providing access to all the functionality of Microsoft products.

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