The First Study to Look at Publication Bias Found a Lot of It!
I was reading O’Rourke’s history of meta-analysis paper and he mentions what is possibly the first paper to systematically look at publication bias based on significance. This is Sterling’s 1959 paper “Publication Decisions and Their Possible Effects on Inferences Drawn from Tests of Significance–Or Vice Versa”.
The main table is striking:
97% rejected the null!