Scientists, as professionals, have a responsibility to self-regulate. Howev
er, whistleblowing is rare. We investigated scientists' infrequent disclosu
re of unethical behavior by studying their responses to scenarios describin
g unethical research acts and compared their responses to those of research
administrators. A cross-sectional survey war administered to National Scie
nce Foundation-funded principal investigators and their institutions' repre
sentatives (IRs) to the Office of Research Integrity. Both scientists and I
Rs proposed to respond to nearly all research behaviors that they rated as
unethical. Scientists more often proposed responses limited to the research
team (58% vs. 25% of cases, p < .001) whereas IRs more often proposed to i
nform an administrator or dean, journal editor; funding agency, professiona
l society, or reporter. The prior behavior and academic rank of the scenari
o protagonist were associated with responses, but consequences of the uneth
ical behavior were not. Scientists appear to perceive that they uphold thei
r responsibility to respond to unethical behavior by disclosures within the
research team, whereas administrators propose to report to externally acco
untable individuals, raising the question of whether scientists' behavior c
onstitutes professional self-regulation or cover up.