In August, the members of a US government interdisciplinary research group gathered behind closed doors to discuss a controversy that had been brewing in the lab. The group - which comprised chemists, biologists, toxicologists, and physicists - was discussing an author dispute that had arisen over a soon-to-be-published manuscript.

One of the life scientists in the lab (who asked to remain anonymous for fear of retribution) had directed a smaller project within his discipline, mentoring a postdoc throughout the conception and execution of the experiments, as well as compiling the paper, which the postdoc wrote. When this researcher returned from vacation and saw the final version of the paper, the postdoc was correctly listed as first author. However, the lab director - not a life scientist - was listed as senior corresponding author. The postdoc's mentor was listed in the middle of the author list.


More not always merrier

As collaborations become more common, deciding who gets credit for what can get complicated, causing turf battles over who really deserves prominent positions on author lists.

Frank Jenkins, a pathologist at the University of Pittsburgh, normally has no problems in his lab when it comes to authorship; the student or postdoc who does most of the work is the first author of the subsequent paper and Jenkins is the last. Recently, however, he ran into problems while collaborating with another lab on a project. After someone in Jenkins' lab had collected most of the data, the collaborating principal investigator (PI) said that his postdoc should be the first author. "It's only when you start having collaborations with other labs that things can get dicey," says Jenkins. While the paper has yet to be published, the PIs agreed to have their postdocs alternate as first authors on subsequent papers from the same collaboration.

Authorship practice varies by field, making interdisciplinary collaborations and the subsequent author lists more complicated. In physics papers, senior and corresponding authors are listed at the beginning of the author list, whereas, in chemistry, the senior author is sometimes the first author on a paper, even if a postdoc completed the bulk of the work. In the life sciences, first listing is usually given to the researcher who did most of the work, both physical and intellectual, and last billing goes to the mentor or person who guided the project and whose grant money paid for the project - the PI. "This new movement toward group authorship ... can get very confusing," says Katrina Kelner, deputy editor for life sciences at Science magazine.

"If you see somebody in the field a long time and they're always in the middle, it looks like they're not in the same leadership position as [people who are consistently] first or last authors." --Anita Sostek

To ward off problems, Elaine Larson, director of the Center for Interdisciplinary Research on Antimicrobial Resistance at Columbia University, establishes a "communication plan" before or just as the writing of a paper begins. The group first decides the discipline and journal to which it will gear its manuscript; that decision helps to determine the first author and the order in which the other authors will be listed. For example, if the paper will be published in a chemistry journal, the senior chemist in the group will be first author. Once the first author is established, that person takes the role of identifying who else should be an author and in what order.

Potential solutions

According to the guidelines of the International Committee of Medical Journal Editors (ICMJE), analyzing and interpreting data are the primary requirements for authorship, whereas acquiring funding, collection of data, and general supervision of research alone do not merit authorship. This method of deciding authorship is common, according to Harvey Markovitch, chair of the Committee of Publication Ethics (COPE).

<figcaption>Source: Journal of Investigative Medicine, May 2007</figcaption>
Source: Journal of Investigative Medicine, May 2007

While some journals present their own guidelines and most go by ICMJE guidelines, there are no accepted standards about order of authors on a list, not to mention who should be on the list in the first place. Now, largely the only repercussion of authorship disagreements is rejection of a manuscript.

When a consortium of authors submits a paper, Kelner and her colleagues at Science spend a great deal of time determining who is a bona fide author; even though Science provides its authors with guidelines on what constitutes authorship, individual authors often don't meet its requirements. In general, Science follows the ICMJE guidelines and checks that all authors on the list have made a substantial contribution to content of the paper. Soon Science will require that all authors of a paper (not just the corresponding author) register online and outline what they've contributed. Science would then approve the paper before it can be submitted.

The Annals of Internal Medicine requires each author to sign a document indicating that they've been involved in either the conception of the project, or analysis or interpretation of the data. By signing, they indicate they've been truthful and that every author has received due credit. If one author declines to sign the form, Annals returns the manuscript to the authors until they can work out their dispute.

Many online commenters suggested that absolute transparency in authorship is the only way to clear up disputes. Why not follow Hollywood's practice for bestowing credit on projects? Following each name in the top author list would be "dish washer," "provided funding," "collected samples," etc., depending on what each researcher contributed. Other commenters suggested that attaching an official document to each paper submission - which made them legally responsible for the paper and their own contributions - might prompt researchers to be more candid about their contributions, or lack thereof.

Some researchers and journals are handling the problem of authorship head-on, but invariably, problems will surface that don't have simple solutions. While the government investigators' closed-door meeting involving the postdoc, the postdoc's mentor, and the lab director seems to have resolved itself unfairly, the mentor (now in the middle of the author list) decided not to pursue the matter further. "Honestly, it would be career suicide to do something like that," he says.

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