Badges for sharing data and code at Biostatistics: an observational study - F1000Research

"The effect of badges at Biostatistics was a 7.3% increase in the data sharing rate, 5 times less than the effect of badges on data sharing at Psychological Science (37.9% badge effect).  Though the effect of badges at Biostatistics did not impact code sharing, and was associated with only a moderate effect on data sharing, badges are an interesting step that journals are taking to incentivise and promote reproducible research."