Alsan, MarcellaCampbell, RomaineLeister, LukasOjo, Ayotomiwa2023-10-062023-10Alsan, Marcella, Romaine A. Campbell, Lukas Leister, and Ayotomiwa Ojo. "Investigator Racial Diversity and Clinical Trial Participation." HKS Faculty Research Working Paper Series RWP23-029, October 2023.https://nrs.harvard.edu/URN-3:HUL.INSTREPOS:37377175We investigate whether increased racial diversity of clinical trial principal investigators could increase the enrollment of Black patients, which currently lags population and disease-burden shares. We conducted a survey experiment in which respondents were shown a photo of a current NIH investigator in which race (Black/White) was randomized. Sex was also randomized as a relevant benchmark. Black respondents reported 0.35 standard deviation units higher interest in participating in a clinical study led by a race concordant investigator (a 12.6% increase). Sex concordance had no effect. Further analyses indicate that perceived trustworthiness and attractiveness are the most important factors explaining these results.en-USResearch Paper or Report2023-10-0610.3386/w31732