Last month, the community was shaken when a major study on gay marriage in Science was retracted following questions on its funding, data, and methodology. The senior author, Donald Green, made it clear he was not privy to many details of the paper — which raised some questions for C. K. Gunsalus, director of the National Center for Professional and Research Ethics, and Drummond Rennie, a former deputy editor at JAMA. We are pleased to present their guest post, about how co-authors can carry out their responsibilities to each other and the community.

Just about everyone understands that even careful and meticulous people can be taken in by a smart, committed liar. What’s harder to understand is when a professional is fooled by lies that would have been prevented or caught by adhering to community norms and honoring one’s role and responsibilities in the scientific ecosystem.
Take the recent, sad controversy surrounding the now-retracted gay marriage study. We were struck by comments in the press by the co-author, Donald P. Green, on why he had not seen the primary data in his collaboration with first author Michael LaCour, nor known anything substantive about its funding. Green is the more senior scholar of the pair, the one with the established name whose participation helped provide credibility to the endeavor.
The New York Times quoted Green on May 25 as saying: “It’s a very delicate situation when a senior scientist makes a move to look at a junior scientist’s data set.”
Really?