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reportMay 7, 2015

Survey Methods

Pew Research Center February – March 2015 Survey This report is based on telephone surveys in the United States and Germany conducted under the direction of Princeton Survey Research Associates International. In the U.S., interviews were conducted February 26 to March 1, 2015 among a national sample of 1,003 adults, 18 years of age or […]
reportSep 10, 2015

A Look at What the Public Knows and Does Not Know About Science

A new Pew Research Center survey finds that most Americans can answer basic questions about several scientific terms and concepts, such as the layers of the Earth and the elements needed to make nuclear energy.
short readsJul 3, 2015

As Greeks head to the polls, the Twitter conversation differs by language

Among Greek-language tweets studied, 40% of the conversation included positive expressions about the EU proposals on the referendum calling for a financial bailout, while 33% was negative and 27% was neutral.
reportMay 12, 2015

Appendix C: Putting Findings From the Religious Landscape Study Into Context

The 2014 Religious Landscape Study has several unique strengths. Its large sample size (n=35,071) and detailed, branching set of questions about religious identity make it possible to estimate the size of a wide variety of religious groups with a high degree of precision. The large sample also makes it possible to describe the characteristics of […]
reportJul 8, 2015

Appendix: Methodology and Data Sources

Updated August 13, 2015: This new edition includes corrected estimates for Iceland, Luxembourg, the Netherlands and Taiwan, and some related aggregated data. This study estimates the population distributions by per capita income in 2001 and 2011 in 111 countries. The distributions are derived from household survey data collected in each country. For most countries, however, […]
reportSep 15, 2015

Hispanics of Puerto Rican Origin in the United States, 2013

An estimated 5.1 million Hispanics of Puerto Rican origin resided in the 50 U.S. states and the District of Columbia in 2013, according to a Pew Research Center analysis of the Census Bureau’s American Community Survey.
reportJul 8, 2015

References

Updated August 13, 2015: This new edition includes corrected estimates for Iceland, Luxembourg, the Netherlands and Taiwan, and some related aggregated data. Alwang, Jeffrey, Paul B. Siegel and Steen L. Jorgensen. 2001. “Vulnerability: A View from Different Disciplines.” Washington, D.C.: World Bank, June. http://documents.worldbank.org/curated/en/2001/06/1637776/vulnerability-view-different-disciplines Baicker, Katherine and Amitabh Chandra. 2005. “The Labor Market Effects of Rising […]
short readsJul 8, 2015

6 key takeaways about the world’s emerging middle class

During the first decade of this century, the world experienced a dramatic drop in the number of people living in poverty and a significant rise in the number who could be considered middle income, but the majority of the global population remains low income.
reportAug 26, 2015

Americans’ Views on Mobile Etiquette

For many Americans, cellphones are always present and rarely turned off. This creates new social challenges, as people believe that different public and social settings warrant different sensitivities for civil behavior.
reportMay 12, 2015

Appendix A: Methodology

The centerpiece of Pew Research Center’s 2014 Religious Landscape Study is a nationally representative telephone survey conducted June 4-Sept. 30, 2014, among a sample of 35,071 U.S. adults. Approximately 60% of the interviews were conducted with respondents reached on cellphones (n=21,160) and 40% were completed on landlines (n=13,911). A minimum of 300 interviews were conducted […]