You are preparing to moderate a usability study for your prototype. What can you do to help reduce bias during the study? Select all that apply.

$1$ point

Ask participants to write down any biases they may carry that will impact the usability study.

Ensure the usability study participants represent your key user group as well as user groups that are often marginalized.

Phrase questions in a way that allows for a diversity of responses.

Define the research criteria before the study begins.