Table 2. Interviewer characteristics.

Interviewer	Credentials	Occupation	Gender	Experience & training	Participant knowledge of interviewer	Interviewer’s views about the research topic
KD	BSc	PhD student	Female	One semester-long module at undergraduate	KD is well-acquainted with one participant; Active Twitter user which participants may access	Believes RRs are likely best practice for confirmatory research
JT	PhD	Post doctorate researcher	Female	Taught undergraduate module on thematic analysis; one-day course on qualitative interviewing; 30+ phenomenology interviews for cognitive study	Email contact and in- person meeting with potential participants from funders and editors; well-acquainted with one participant; Active Twitter user which participants may access	Written one RR; given workshops advocating for RRs and believes they are likely best practice for confirmatory research
RC	MSc	Research associate	Male	Has studied the fundamentals of qualitative research during Research Methods module in MSc. Experience leading around 12 interviews and focus groups in academic settings.	Well-acquainted with one participant; Active Twitter user which participants may access	Believes RRs could provide a useful means of overcoming publication bias and encouraging transparent research