How to Use None-of-the-Above Options
Decide whether a conjoint task should allow respondents to reject all shown profiles.
The Short Version
Decide whether a conjoint task should allow respondents to reject all shown profiles. A practical way to begin is to decide whether respondents can reject all options in the real-world setting, then enable a no-choice option only when it matches the research question. Finish by making sure you analyze profile choices and no-choice behavior consistently. The full walkthrough below explains each part in order.
Is This Guide for You?
Researchers studying choices where opting out is realistic or theoretically important.
Follow These Steps
Work through these 6 steps at your own pace. The wording is intentionally practical, and you can return to the checklist at the end when you are ready to review your work.
- Decide whether respondents can reject all options in the real-world setting.
- Enable a no-choice option only when it matches the research question.
- Write the option label clearly.
- Pilot whether respondents overuse the option.
- Report how often it was selected.
- Analyze profile choices and no-choice behavior consistently.
What This Helps You Accomplish
A forced choice estimates tradeoffs among shown profiles. A no-choice option adds realism for some domains but changes the interpretation of results.
A Quick Confidence Check
- Use no-choice when opt-out is substantively meaningful.
- Do not add it just to reduce discomfort.
- Report no-choice rates.
- Keep analysis decisions consistent with the design.
Common Questions
Can I use this guide if I am new to this?
Yes. Researchers studying choices where opting out is realistic or theoretically important. Follow the steps in order, start with a small test, and use the final checklist before you field or report anything important.
What is the simplest way to get started?
Begin by decide whether respondents can reject all options in the real-world setting. Next, enable a no-choice option only when it matches the research question. You do not need to perfect every setting before running a small preview or pilot.
How do I know when I am ready?
Use the confidence check above. In particular: Use no-choice when opt-out is substantively meaningful. Do not add it just to reduce discomfort. Report no-choice rates. Keep analysis decisions consistent with the design. When the decision is consequential, keep your study documentation and ask a qualified colleague or methods reviewer to examine the design as well.
Related Guides
Research artifact: sample data, codebook, and scriptsResearch Pathways
Product names and fielding platforms mentioned in this guide belong to their respective owners. Conjoint Survey is an independent academic research tool and is not affiliated with, sponsored by, or endorsed by those services.