What are some good questions to ask when interviewing prospective research assistants?

What appeals to you about doing research and what do you hope to gain?
What are your aspirations after college?
What courses have you particularly enjoyed and what aspects of those courses did you especially like?
Is there a research paper you’ve read that you found particularly interesting?
Have you been involved in any group projects in any of your courses? If so, describe the projects, your role, and a bit about how the group interacted.
What are your extra-curricular interests?
What are your competing commitments and how much time can you realistically allocate to research?
How long would you like to participate in this project (e.g., one summer, one semester, multiple years)?