“…Although publishing is not a mandatory requirement of most doctoral degrees, doctoral students contribute a third of scientific publications (Larivière, 2010(Larivière, , 2012 to build their CV (Hatch & Skipper, 2016) and prepare their future research (Horta & Santos, 2016). Doctoral graduates must demonstrate their ability to conduct independent research (Hatch & Skipper, 2016;Johnson, 2009;O'Connor & Park, 2001) but it is not clear how advisors' disciplinary background affect student's publishing productivity and quality. Previous studies show that most doctoral students do not receive adequate support to publish their research (Dinham & Scott, 2001;Engstrom, 1999), and Kamler (2008) reports that coauthorship with advisors can improve doctoral students' publishing competency but this support varies across disciplines.…”