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What’s Missing from National RDD Surveys? The Impact of the Growing Cell-Only Population

What’s Missing from National RDD Surveys? The Impact of the Growing Cell-Only Population. Scott Keeter, Pew Research Center Courtney Kennedy, University of Michigan April Clark, Northern Illinois University Trevor Tompson, The Associated Press Mike Mokrzycki, The Associated Press.

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What’s Missing from National RDD Surveys? The Impact of the Growing Cell-Only Population

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  1. What’s Missing from National RDD Surveys?The Impact of the Growing Cell-Only Population Scott Keeter, Pew Research Center Courtney Kennedy, University of Michigan April Clark, Northern Illinois University Trevor Tompson, The Associated Press Mike Mokrzycki, The Associated Press

  2. Percent Ages 18-29 Parameter Source: Pew Research Center surveys

  3. Percent Ages 18-29 Parameter Unweighted survey statistic Source: Pew Research Center surveys

  4. What We Did • 4 dual-frame surveys in 2006, 4 in 2007, 5 in 2008 • Multiple surveys on politics and the campaign • Others on gadgets, the internet, media consumption, the economy, gender relations

  5. Respondent CharacteristicsLandline sample versus Cell-only adults

  6. Characteristics of Landline Sample and Cell-only Respondents* *Figures based on unweighted data

  7. Characteristics of Landline Sample and Cell-only Respondents* *Figures based on unweighted data

  8. Characteristics of Landline Sample and Cell-only Respondents* *Figures based on unweighted data

  9. How are estimates affected?

  10. Impact on Estimates from Including Cell Phones

  11. Impact on Estimates from Including Cell Phones

  12. Impact on Estimates from Including Cell Phones

  13. Impact on Estimates from Including Cell Phones Based on Republican & Rep-leaning RVs (December 2007)

  14. Impact on Estimates from Including Cell Phones Based on Democrat & Dem-leaning RVs (December 2007)

  15. Impact of Including Cell Phones on August 2008 Horse Race

  16. Media Consumption Estimates, 2008

  17. Media Consumption Estimates, 2008

  18. Media Consumption Estimates, 2008

  19. Under Age 30: Landline Sample and Cell-only Respondents* *Figures based on unweighted data

  20. Under Age 30: Landline Sample and Cell-only Respondents* *Figures based on unweighted data

  21. Under Age 30: Impact on Estimates from Including Cell Phones

  22. Under Age 30: Impact on Estimates from Including Cell Phones

  23. Ages 18-25: Impact on Estimates from Including Cell Phones

  24. Summary of Comparisons for Analysis of Ages 18-25

  25. Quality of Responseslandline versus cell phone interviews

  26. Quality of Responses • Are cell phone respondents moredistracted? Source: October survey

  27. Quality of Responses • Are cell phone respondents lesscooperative? Source: October survey

  28. Interviewing Rates Source: June 2008 survey (results for other surveys were highly similar)

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