Checklist
How to contain panel conditioning

Six design rules for keeping panel conditioning out of your research data, adapted from the rotation logic of the US Current Population Survey: cap exposure per study line, set a rest interval, refresh on a schedule, keep triage and evaluation cohorts apart, and save experienced participants for exploratory work. It suits anyone running a tracker, a customer advisory board or a standing research panel. With Koji, a fresh cohort costs little to interview, which makes rotation practical.
Where this appears
What's in this checklist
- Cap how often anyone answers the same tracker, three to four waves at most
- Leave at least a quarter between one person's sessions
- Refresh a fixed share of the panel on a schedule, not when response drops
- Never ask the people who described a problem to evaluate its fix
- Keep experienced participants for depth interviews, concepts and usability
- Use fresh participants wherever you need to compute a rate
Use this image
Free to use in your docs, decks and posts under CC BY 4.0, as long as you credit Koji with a link to this page. To embed it, paste this into your page:
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<a href="https://www.koji.so/visuals/how-to-contain-panel-conditioning-checklist"><img src="https://www.koji.so/visuals/how-to-contain-panel-conditioning-checklist/how-to-contain-panel-conditioning-checklist.png" alt="Checklist of six design controls for panel conditioning, from capping waves per person and rest intervals to scheduled refreshment." width="1200" height="630" /></a>
<p>Source: <a href="https://www.koji.so/visuals/how-to-contain-panel-conditioning-checklist">How to contain panel conditioning</a>, Koji</p>

