Responsible authorship: why researchers must forgo honorary authorship.

Although widespread throughout the biomedical sciences, the practice of honorary authorship-the listing of authors who fail to merit inclusion as authors by authorship criteria-has received relatively little sustained attention. Is there something wrong with honorary authorship, or is it only a problem when used in conjunction with other unethical authorship practices like ghostwriting? Numerous sets of authorship guidelines discourage the practice, but its ubiquity throughout biomedicine suggests that there is a need to say more about honorary authorship. Despite its general acceptance among many scientists, honorary authorship is unethical. Even if burdensome, responsible researchers are obligated to forgo honorary authorship.