Arnold Lau is a research analyst focusing on survey methodology.
Arnold Lau
Publications
Confronting 2016 and 2020 Polling Limitations
Looking at final estimates of the outcome of the 2020 U.S. presidential race, 93% of national polls overstated the Democratic candidate’s support among voters, while nearly as many (88%) did so in 2016.
What 2020’s Election Poll Errors Tell Us About the Accuracy of Issue Polling
Given the errors in 2016 and 2020 election polling, how much should we trust polls that attempt to measure opinions on issues?
Assessing the Risks to Online Polls From Bogus Respondents
While the growth of online interviewing is a prominent trend in polling, there is variation within that trend in how researchers recruit respondents. This study finds that sourcing affects data quality.
Why survey estimates of the number of Americans online don’t always agree
How many U.S. adults use the internet? There are a lot of sources with answers to this question. Yet these different sources can be tricky to reconcile.
When Online Survey Respondents Only ‘Select Some That Apply’
when designing an online survey questionnaire, there is more than one way to ask a respondent to select which options in a series applies to them.
For Weighting Online Opt-In Samples, What Matters Most?
A growing share of polling is conducted with online opt-in, or nonprobability, samples. This trend has raised some concern within the industry because, while low participation rates pose a challenge for all surveys, the online opt-in variety face additional hurdles.
