Do you feel your involvement has made a difference so far?

What's changed because of your involvement? How/why?

How can we improve the impact of PPI?

Are there any types of research or parts of research where PPI isn't useful?

There's a continuing debate about how we judge the success of PPI in research and how we measure its impact. Do you have any thoughts about that?

Do you think we need to measure PPI or capture its impact?

Do you have any experience of measuring PPI impact?