Optimal Workshop

Learn more about how to replace participants in-app and our participant response flagging feature

How to replace study participants in-app

Advice and guides to help source and manage participants for your studies 

Find out how to make sure that your participants understand your privacy policy

If you’re ordering participants through our recruitment service, read on to learn about how it works and how to set it up for your study.

Participant sourcing through online recruitment, site banners, emails, social media and a participant screening tool.

Learn how to use a screening question with our recruitment service and what happens if participants are being rejected from your study.

Learn how to attract participants to your study, and how to encourage them to complete the entire study.

Learn how to use a participant recruitment panel with our tools.

Integrate with Ethnio to screen participants or integrate with other services to screen participants using our recruitment service.

How to group the participants you recruit by adding group 'tag' parameters to your study URLs before you send them.

Guidelines to help you decide how many participants will be enough for you to get insights and ensure the analysis is manageable.

Learn how to pass different participant identifiers in or out of your study.

You can chain multiple studies together by using the Redirect URL setting. Here's what you need to know.

If you have a large of number of tasks, you can opt to show a random subset of tasks to your participants.

If you have participants marked as 'Abandoned' in your results, read more about why we include them in your study.