Numbers, Facts and Trends Shaping Your World
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The shrinkage of the middle-income tier among American adults, and the growth of the upper- and lower-income tiers, has played out differently among demographic groups. This section identifies upwardly and downwardly mobile groups (winners and losers) by comparing changes in their income status over two time periods. From 1971 to 2015, adults overall experienced more […]
The Pew Research Center’s Teen Relationship Study was funded, designed and analyzed by Pew Research Center staff. Quantitative fieldwork was conducted by the GfK Group (GfK, formerly Knowledge Networks). Specifically, the survey examined the attitudes of teens ages 13 to 17 years old, as well as those of their parents, toward technology. The survey examined […]
With so much new infrastructure, 62% of urban areas in China with populations over 100,000 have become less crowded — even as most gained in total population.
Many see libraries as places of learning and pursuing knowledge. Pew Research Center’s April 2015 survey explored those themes and took an expansive view by asking people how they see libraries as vehicles for economic opportunity and inclusion of various groups that have drawn particular attention from librarians. This scope of inquiry provides insight into […]
Study Design & Documentation Introduction The Pew Research Center’s Teen Relationship Study was funded, designed and analyzed by Pew Research staff. Quantitative fieldwork was conducted by the GfK Group (GfK, formerly Knowledge Networks). Specifically, the survey examined the attitudes of teens ages 13 to 17 years old, as well as those of their parents, toward […]
This appendix describes the specific items used from these various sources and the development of some of the migration measures used in the report. Data from the Mexican Survey of Demographic Dynamics (ENADID), the American Community Survey, the U.S. censuses of 1990 and 2000, and the Current Population Survey are based on Pew Research Center […]
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 […]
Study Design & Documentation Introduction The Pew Research Center’s Teen Relationship Study was funded, designed and analyzed by Center staff. Quantitative fieldwork was conducted by the GfK Group (GfK, formerly Knowledge Networks.) Specifically, the survey examined the attitudes of teens age 13 to 17 years old, as well as those of their parents, toward technology. […]
Half of Americans (48%) say two is the ideal number of children for a family to have, reflecting a decades-long preference for a smaller family over a larger one.
Population Estimates and Projections: Definitions, Methods and Data Sources Overall Methodology The national projections presented here use a variant of the basic cohort component model in which the initial population is carried forward into the future by adding new births, subtracting deaths, adding people moving into the country (immigrants), and subtracting people moving out (emigrants). […]
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