Peer reviewers are four times more likely to give a grant application an "excellent" or "outstanding" score rather than a "poor" or "good" one when they are chosen by the grant’s applicants, an analysis of Swiss funding applications has found.
The study, at the Swiss National Science Foundation (SNSF), was completed in 2016, and the SNSF acted quickly on its findings by banning grant applicants from being able to recommend referees.
The authors, who are affiliated with the SNSF, posted their results online at
PeerJ Preprints1 on 19 March, and in their paper call on other funders to reconsider their funding processes.
“I think this practice should be abolished altogether,” says study co-author Anna Severin, a sociologist who studies peer review at the University of Bern. Other experts are also wary of the problems that author-picked peer reviewers might cause, but some question whether banning them altogether is the right step.
The study examined more than 38,000 reviews from nearly 13,000 SNSF grant applications by about 27,000 peer reviewers from all disciplines between 2006 and 2016. The authors found that reviewers nominated by applicants were more likely to give these applicants higher evaluation scores than referees chosen by the SNSF.