Daniel Bradford, a Ph.D. student in clinical psychology at the University of Wisconsin in Madison, was “excited about helping” with the paper. “I had been a longtime student of statistics and I had been joining the waves of discussion of methodological reform in psychology,” he says. Bradford was initially skeptical that the crowdsourcing authorship process would work. “I have collaborated on papers with only five authors and often thought that things would be much more efficient if the author list was even shorter than that,” he says.