Caroline Jarrett
Author of Surveys That Work
Caroline Jarrett is the forms specialist, advising organizations on how to make forms easier to fill in and how to improve websites and business processes that include forms.
Her research on topics like “How do people answer questions?” led her to explore the literature on survey methodology, the concept of Total Survey Error, and advising her clients on how to improve their surveys, as well as their forms.
Caroline has an MA in Mathematics from Oxford University, an MBA and a Diploma in Statistics from the Open University, and is a Chartered Engineer. Caroline is co-author of Forms that Work: Designing Web Forms for Usability (Morgan Kaufmann/Elsevier) and of User Interface Design and Evaluation (The Open University/Elsevier).
Caroline’s website is Effortmark.co.uk.
Rosenverse talks by Caroline:
" It's almost impossible to do a survey without using some kind of tool nowadays. "
Survey Tools
March 12, 2026
" Data quality involves accuracy, completeness, uniqueness, timeliness, and representativeness—not just error reduction. "
Garbage in, garbage out? Measuring error rates to get ready for AI
January 8, 2026
" You can have an effect size that matters in practice but isn’t statistically significant, like five users failing a key task in usability testing. "
Have fun with statistics?
December 12, 2024
