[*AoI = “Articles of Interest” is a feature of TRN where we report abstracts of recent research related to replication and research integrity.]

ABSTRACT (taken from the article)

“We assess the impact of mandating data-sharing in economics journals on two dimensions of research credibility: statistical significance and excess statistical significance (ESS). ESS is a necessary condition for publication selection bias. Quasi-experimental difference-in-differences analysis of 20,121 estimates published in 24 general interest and leading field journals shows that data-sharing policies have reduced reported statistical significance and the associated t-values. The magnitude of this reduction is large and of practical significance. We also find suggestive evidence that mandatory data-sharing reduces ESS and hence decreases publication bias.”

Reference: Askarov, Z., Doucouliagos, A., Doucouliagos, H., & Stanley, T. D. (2023). The significance of data-sharing policy. Journal of the European Economic Association, 21(3), 1191-1226