Pew Research Center

FOR RELEASE FEBRUARY 7, 2019

Methods 101: Mode effects

How does the way a poll is conducted influence the answers people give?

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RECOMMENDED CITATION

Pew Research Center, February 2019, "Methods 101: Mode effects"

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Table of contents

  • About Pew Research Center

Methods 101: Mode effects

How does the way a poll is conducted influence the answers people give?

How does the way a poll is conducted influence the answers people give? Courtney Kennedy walks through what to know about survey mode effects. To learn more about polling basics, watch our Methods 101 video series.

  • Random Sampling
  • Survey Question Wording
  • Mode effects
  • What are nonprobability surveys?
  • How is polling done around the world?
  • What is machine learning, and how does it work?
  • Why have polls underestimated Donald Trump?
  • How do polls work when no one answers the phone anymore?