Survey question evaluation at scale: applying large language models to the QAS-99

Publication type

Survey Futures Working Paper Series

Series Number

22

Series

Survey Futures Working Paper Series

Authors

Publication date

July 17, 2026

Summary:

The Question Appraisal System (QAS-99) is a widely used protocol for the systematic assessment of survey questions, requiring evaluators to make 27 binary coding decisions across eight appraisal steps. QAS coding is slow and resource-intensive, creating the possibility that large language models (LLMs) can replace or supplement human evaluators. We compared LLM evaluations of 118 draft survey questions with those of a QDET expert and novice coders. Agreement was further assessed using additional human evaluators and a second LLM on a validation subset. We find that LLMs produced actionable QAS evaluations at scale, with agreement levels broadly comparable to those observed between novice and expert human evaluators. LLMs identified fewer problems than novices, who in turn identified fewer problems than experts, suggesting that expertise currently remains important for questionnaire review. Agreement varied substantially across QAS decisions, indicating that some question characteristics are inherently more difficult to evaluate than others. Compared with the expert coder, the LLM was notably less likely to identify certain data quality risks, particularly those related to social desirability bias. Nevertheless, the findings suggest that LLMs can support QAS-based survey appraisal at scale and large-scale research on questionnaire design and survey measurement error.

Subjects

Paper download  

#589116

News

Latest findings, new research

Publications search

Search all research by subject and author

Podcasts

Researchers discuss their findings and what they mean for society

Projects

Background and context, methods and data, aims and outputs

Events

Conferences, seminars and workshops

Survey methodology

Specialist research, practice and study

Themes

Key research themes and areas of interest