Table 1.
Regression results of actual and perceived prevalence of ghost and honorary authorship.
Fig 1.
Rates of ghost (A) and honorary (B) authorship. N. of obs. are 1,878 for (A) and 1,881 for (B).
Fig 2.
Shares of the identified rate of ghost authors and perceived rate of ghost authors (A) as well as the shares identified rate of honorary authors and perceived rate of honorary authors (B). N. of obs. are 813 for (A) (because we only can assess the rate of ghost authors among the papers including at least one non-author contributor) and 1,842 for (B).
Table 2.
Authorship assignments in the vignettes split by treatment group.
Table 3.
Regression results of hypothetical authorship assignments in the vignettes.