Once you've ordered your questions, go through each one to add potential follow-up questions. Follow-up questions are questions asked after a general question to clarify or elaborate. While you might be inclined to ask such questions naturally, writing them down will help you to remember to do so.

For example, when doing research for a cooking app, you might ask participants a question, "You mentioned you [do/don't] like to cook. Why is that?" Imagine what answers you might potentially get and think of ways to probe for more information.

Some follow-up or probing questions you might use here are:

• Tell me more about that
• Why is that important to you?