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• Civic engagement and good governance
• Demographics

The Youth Development Study (YDS) was initiated as a school-based study of adolescent children and their parents to examine the consequences of formative experiences in adolescence for mental health, value formation, educational achievement, and multiple facets of behavioral adjustment. Particular attention was directed to the impacts of early work experience. Data were also obtained about parent-child and peer relationships and experiences in school. As the study continued, the focus shifted to adult development and attainment and, most recently, mid-life adjustment and health. This comprehensive longitudinal study now encompasses three generations: the initial cohort studied from adolescence to mid-life (G2), their parents (G1), and their adolescent children (G3). Data from three generations in the same families enable study of intergenerational relationships and differences in the experience of adolescence and transition to adulthood across parent and child cohorts. The YDS covers a wide range of topics of interest to sociologists, social psychologists, developmental psychologists, and life course scholars, including the development and impacts of agentic resources, socioeconomic attainment, processes of inter- and intra-generational mobility, objective and subjective work conditions, family relationships, intergenerational relationships, mental and physical health, and well-being.

In-school administration of paper surveys during the first four years of the study was supplemented by mailed surveys. Subsequent data collection took place entirely by mail, with 19 surveys conducted between 1988 and 2011. A final survey was conducted on-line in 2019. Survey data was obtained from the parents (G1) of this cohort during the first and fourth waves of the study (1988 and 1991). Surveys of the children (G3) began in 2009, continued in 2010 and 2011 (by mail) and in 2019-2020 (online).

The Youth Development Study measures a wide range of formative experiences and both psychological and behavioral variables, using survey methodology.

The G1 surveys obtained information about socioeconomic background as well as attitudes toward teenage employment, the parents' own employment as teenagers, their current work experiences, and educational expectations for their children.

The G2 surveys during the high school years included detailed questions about students' work and volunteer experiences, as well as experiences in their family, school, and peer groups, with an emphasis on the ways that working affected other life domains, mental health, and well-being. Shorter surveys containing many of the same topics were administered to students in 1992, 1993, and 1994, and included questions about current family and living arrangements. In 1995, a full survey was administered covering the wide range of topics included in previous surveys as well as information about career plans and life events that had occurred in the past five years. G2 Waves 9 through 19 (1997-2011) included many of the same questions contained in earlier surveys and additional sections that focused on the respondents' educational experiences, family relationships, sources of living expenses, and health and well-being. The most recent G2 survey (2019), administered on-line, included questions about support of aging parents. The YDS is unique in its coverage of both objective and subjective work experiences from adolescence to mid-life.

The topics covered by the G3 surveys are very similar to the G2 variables described above. Variables in each G2 and G3 wave are included in cross-wave codebooks, available at the Data Archive Codebook website.

For an overview of the Youth Development Study, see Mortimer, Jeylan T. (2012) "The Evolution, Contributions, and Prospects of the Youth Development Study: An Investigation in Life Course Social Psychology." Social Psychology Quarterly 75(1, March):5-27.

The National Surveys on Energy and Environment (NSEE), is an on-going biannual national opinion survey on energy and climate policy. Launched in 2008, over time the NSEE has covered topics such as public policy approaches to address climate change including federal, state, and international action; energy policies such as cap-and-trade, carbon taxes, renewable energy requirements, vehicle emissions standards, and many more; and knowledge and attitudes about global warming, climate adaptation, fracking, and geoengineering. NSEE was co-founded by professor Barry Rabe at the University of Michigan, and professor Christopher Borick at Muhlenberg College, and is fielded by the Muhlenberg College Institute of Public Opinion.

From 2008 to 2012 the survey was called the "National Survey of American Public Opinion on Climate Change" (NSAPOOC); starting in 2013 the survey was renamed to the "National Surveys on Energy and Environment" (NSEE). This dataset includes data from eighteen waves, from Fall 2008 through Fall 2017. Demographic variables include age, years of education completed, income, political affiliation, religious affiliation, gender, and race.

The Sri Lankan Environmental and Agricultural Decision-making Survey (SEADS) collected quantitative data from paddy farming households in 24 pre-selected villages in the dry zone of Sri Lanka. These data include information about livelihoods, economic activity, household characteristics, cultivation, and experiences with water scarcity and environmental stress. The objective of SEADS was to collect high quality data that could be used to:

• Understand the impacts of water scarcity on farming households throughout the dry zone, and to assess vulnerability to climate change impacts.
• Document methods of coping with water scarcity utilized by farmers and communities throughout the dry zone.
• Estimate the rate of adoption of agricultural adaptations promoted by governmental and non-governmental organizations and community leaders (e.g., parachute method, low flood depth irrigation, short duration seed varieties.)
• Understand what programs or policies may help support farmers to cope with water scarcity in the future.

Demographic variables collected include age, gender, religion, ethnicity, district of origin, education level, and occupation.

The Eurobarometer series is a unique cross-national and cross-temporal survey program conducted on behalf of the European Commission. These surveys regularly monitor public opinion in the European Union (EU) member countries and consist of standard modules and special topic modules. The standard modules address attitudes towards European unification, institutions and policies, measurements for general socio-political orientations, as well as respondent and household demographics. The special topic modules address such topics as agriculture, education, natural environment and resources, public health, public safety and crime, and science and technology.

This round of Eurobarometer surveys covered the following special topics among respondents aged 16 to 30 years: (1) Mobility, (2) Job Training and Education, (3) Institutional Impact, (4) Social and Political Life, and (5) Climate Change. Respondents' opinions were collected regarding their mobility within the European Union, and how this affected their ability to study, train, and work. Respondents were also asked about training, school and university education in their own respective countries as well. Additional questions were asked regarding EU institutions and the impact of the EU initiative known as 'Youth Guarantee.' Respondents were also asked about their socioeconomic position in society, the impact of recent economic crises on their economic and social lives, and their attitudes toward environmental and climate change. In addition, respondents were also asked about their relationship to online social networks, as well as public life in the EU in general.

Demographic and other background information collected includes age, gender, nationality, marital status, occupation, age when stopped full-time education, household composition, ownership of a fixed or mobile telephone and other goods, difficulties in paying bills, level in society, and Internet use. In addition, country-specific data includes type and size of locality, region of residence, and language of interview (select countries).

The Eurobarometer series is a unique cross-national and cross-temporal survey program conducted on behalf of the European Commission. These surveys regularly monitor public opinion in the European Union (EU) member countries and consist of standard modules and special topic modules. The standard modules address attitudes towards European unification, institutions and policies, measurements for general socio-political orientations, as well as respondent and household demographics. The special topic modules address such topics as agriculture, education, natural environment and resources, public health, public safety and crime, and science and technology.

Eurobarometer 81.3 covered the following special topics: (1) Attitudes of European Citizens Towards the Environment and (2) Skills and Qualifications in the EU. Respondents' opinions were collected regarding their concern about environmental issues such as protection of natural resources, biodiversity, and pollution; their level of knowledge of these issues; and if they trusted various agencies such as the local government, trade unions, or consumer associations to provide reliable information about environmental issues. Respondents were also questioned about how environmental, social, and economic factors affected their quality of life, which group or groups were most responsible for addressing environmental issues, and which solutions they felt would have the strongest impact. Additional questions were asked regarding which skills were most important to achieve success in the workforce, where such skills could best be obtained, and the ease of accessing information on how to pursue educational opportunities to acquire these skills. Respondents were also asked about their socioeconomic position in society, whether their voice was being heard in the electoral system, and their opinions on if their home country and the European Union were generally going in the right or wrong direction.

Demographic and other background information collected includes age, gender, nationality, marital status, occupation, age when stopped full-time education, household composition, difficulties in paying bills, self-assessed level in society, self-assessed social class, and Internet use. In addition, country-specific data includes type and size of locality, region of residence, and language of interview (select countries).

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The General Social Survey (GSS) conducts basic scientific research on the structure and development of American society with a data-collection program designed to both monitor societal change within the United States and to compare the United States to other nations. Begun in 1972, the GSS contains a standard 'core' of demographic, behavioral, and attitudinal questions, plus topics of special interest. Many of the core questions have remained unchanged since 1972 to facilitate time-trend studies as well as replication of earlier findings.

The Eurobarometer series is a unique cross-national and cross-temporal survey program conducted on behalf of the European Commission. These surveys regularly monitor public opinion in the European Union (EU) member countries and consist of standard modules and special topic modules. The standard modules address attitudes towards European unification, institutions and policies, measurements for general socio-political orientations, as well as respondent and household demographics. The special topic modules address such topics as agriculture, education, natural environment and resources, public health, public safety and crime, and science and technology.

This round of Eurobarometer surveys includes the standard modules and covers the following special topics: (1) Climate Change, (2) Biodiversity, (3) and Discrimination of Minority Groups. Respondent's opinions were collected on which world issues they believed were the most serious problems, how serious the issue of climate change was and if the EU should be responsible for addressing it, and what actions the have personally taken to fight climate change. Additional questions were asked regarding biodiversity and the dangers presented problems such as the decline of natural habitats and animal and plant species, and how these issues should be addressed by various groups. Respondents were also queried about their knowledge of Natura 2000 and other nature protection networks. Lastly, respondents were questioned regarding their experiences of and attitudes toward discrimination.

Demographic and other background information collected includes age, gender, nationality, marital status and parental relations, occupation, age when stopped full-time education, left-right political self-placement, household composition, ownership of durable goods, difficulties in paying bills, self-assessed social class, and Internet use. In addition, country-specific data includes type and size of locality, region of residence, and language of interview (select countries). Pre-archive/1st release version.

The General Social Survey (GSS) collects information from the general public on a wide variety of subjects, including attitudes toward social issues, religion, education, jobs and the economy, government and other institutions, politics, and policy issues. The 2012 merged data used a rolling panel design. The first panel is the 2008 GSS as the base year. The second panel is a subsample of the GSS cases from 2008 that was selected to be reinterview for the GSS in 2010 along with a new cross-section of cases. The third panel is the same subsample of 2008 GSS cases reinterviewed for the GSS in 2012 along with a new cross-section of cases. The 2012 GSS merged data file has the third wave of the 2008 respondents (N=1295), the second wave of the 2010 respondents (N=1,551), and the first wave (a cross-section) of 2012 respondents (N=1,974).

Besides the standard GSS topics, such as attitudes toward social issues, religion, education, jobs and the economy, government and other institutions, politics, and policy issues, the 2012 GSS data included a "Cultural Module," a battery of questions focused on culture and the arts. Questions asked if the respondent attended various performances or exhibits, who they attended with, if the performance attended was free, factors that impacted the decision to attend or not attend. The merged data also include demographic information including age, sex, race, and income. This data collection also contains questions asked in the 2008 GSS and the 2010 GSS.

The Kinder Houston Area Survey is a longitudinal study that began in May 1982 after Houston, Texas, recovered from the recession of the mid-1980s. The overall purpose of this research was to measure systematically the public responses to the new economic, educational, and environmental challenges, and to make the findings of this continuing project readily available to civic and business leaders, to the general public, and to research scholars. Part 1, All Responses from 25 Successive Samples, contains all the responses from the successive representative samples of Harris County residents from 1982 through 2014. These are the data that enabled the project to analyze continuity and change among area residents over the course of 26 years. In 13 of the 14 surveys (the years from 1994 through 2014, the one exception being 1996), the surveys were expanded with oversample interviews in Houston's ethnic communities. Using identical random-selection procedures, and terminating after the first few questions if the respondent was not of the ethnic background required, additional interviews were conducted in each of the years to enlarge and equalize the samples of Anglo, African American, and Hispanic respondents at about 500 each. In 1995 and 2002, the research also included large representative samples (N=500) from Houston's Asian communities, with one-fourth of the interviews conducted in Vietnamese, Cantonese, Mandarin, or Korean -- the only such surveys in the country. These additional interviews are included in Part 2, Additional Oversample Interviews.

The data contained in Part 2 are for Restricted-Use of Part 1, All Responses from 25 Successive Samples.

The data contained in Part 3 are based on a 14-year total of 6,576 Anglos, 6,086 African Americans, 6,094 Hispanics, and 1,250 Asians, along with 387 others, and are of particular value in assessing the similarities and differences both within and among Houston's (and America's) four largest ethnic groups. Beginning in 2003, the data files have incorporated detailed information from the 2000 Census on the characteristics of the respondent's neighborhood, not only at the level of home ZIP code, but also by Census tract and block group.

In Part 4, Restricted-Use information from 2000 Census, the data record the population and geographical area of each of the three sectors, distributions by ethnicity and immigrant status, age and gender composition, employment and commuting patterns, and levels of education and income. With this information incorporated in the datasets covering five years of expanded surveys, researchers are able to connect the respondents' perceptions and experiences with information on the neighborhoods in which they live, thereby adding a contextual dimension to analyses of the factors that account for individual differences in attitudes and beliefs. Conducted during February and March of each year, the interviews measured perspectives on the local and national economy, on poverty programs, inter-ethnic relationships. Also captured were respondents' beliefs about discrimination and affirmative action, education, crime, health care, taxation, and community service, as well as their assessments of downtown development, mobility and transit, land-use controls and environmental concerns, and their attitudes toward abortion, homosexuality, and other aspects of the social agenda. Also recorded were religious and political orientations, as well as an array of demographic and immigration characteristics, socioeconomic indicators, and family structures.

The Eurobarometer series is a unique cross-national and cross-temporal survey program conducted on behalf of the European Commission. These surveys regularly monitor public opinion in the European Union (EU) member countries and consist of standard modules and special topic modules. The standard modules address attitudes towards European unification, institutions and policies, measurements for general socio-political orientations, as well as respondent and household demographics. The special topic modules address such topics as agriculture, education, natural environment and resources, public health, public safety and crime, and science and technology.

This round of Eurobarometer surveys covers the following special topics: (1) the economic crisis, (2) volunteer work, (3) the environment, (4) interests and access to audiovisuals, and (5) helplines for social services. Questions in this survey pertain to the effect of the euro on the economic crisis, proper country and EU response to the economy's problems, appropriate response to food shortages and rising food prices, and European Parliament policy priorities. Respondents were asked for their opinions concerning volunteering and how often they volunteered, the importance of environmental protection, environmental issues that worried them and the best way to address these issues, and personal efforts to protect the environment. Other questions address the type, source and frequency of audiovisual content consumed. Lastly, respondents were queried on knowledge and opinions of telephone hotlines and helplines for services of social value.

Demographic and other background information collected includes age, gender, nationality, marital status and parental relations, left-right political self-placement, occupation, age when stopped full-time education, household composition, ownership of a fixed or a mobile telephone and other durable goods, difficulties in paying bills, level in society, and Internet use. In addition, country-specific data includes type and size of locality, region of residence, and language of interview (select countries).