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Gallup -- like many other researchers -- uses cognitive interviewing, as well as several other tools, to ensure the questions it is going to ask are clear and easy to answer, and measure what they are supposed to.
Gallup is committed to research that represents different backgrounds. Find out what we're doing to ensure all Black Americans' voices are heard.
The United Nations has a new official method for classifying urban and rural areas around the world: the Degree of Urbanisation.
Until recently, researchers have struggled with what should be a simple question: How many Americans are lesbian, gay, bisexual or transgender?
Gallup and Lloyd's Register Foundation, a charitable organization, are launching the first-ever global study of the public understanding of risk.
Gallup and the European Commission have developed a new Degree of Urbanisation variable that can be used to explore the effects of urbanicity.
More Americans are sympathetic to the Israelis in the Middle East conflict after being asked for their views on Israel and the Palestinian Authority.
Gallup's Wellbeing Inequality Ratio may offer more information about inequality within a country than income alone. Find out how it is calculated.
Gallup recently tested the value of including Quick Response Codes in survey invitations.
Gallup and Walk Free developed a methodology to estimate the prevalence of modern slavery using an innovative modeling approach.
Cellphone scamming and blocking technologies present a new challenge to survey researchers.
Researchers who are considering mixing survey research modes or contemplating a transition to a new method should be especially mindful of mode effects.
Telephone survey response rates are down across the survey research industry, requiring researchers to explore alternatives that supplement phone surveys.
Gallup research shows that post-paid incentives are highly effective in web-based surveys.
Survey respondents probed after an initial "don't know/refused" response give systematically different answers than those not probed for a response.
Text messaging is widely used in the U.S., but it appears to have significant drawbacks as a primary way to reach survey respondents.
Hear directly from Gallup's methodologists about our latest experiments and recommendations for conducting public opinion research.