These types of questions helped guide the semi-structured interviews. This approach provided flexibility and gave interviewees an opportunity to identifyand explain important examples that may not have surfaced otherwise. However, the interviews were also repeatable since the same core questions were asked of each interviewee.Interviews were audio recorded, as permitted by the participants, and used as back up to handwritten notes.Interviews were scheduled for 30 min; average interview length was 27.5 min.