“Half of social-science studies fail replication test in years-long project”: that’s the headline from reports on the latest mass replication project sponsored by the Center for Open Science (COS).

Over the past two centuries, economists, policy makers, and researchers have aspired to “harden” social science. A lot of progress has been made: using randomized, controlled experiments; making ...

Three experts discuss lessons learnt from a large-scale dissection of the reproducibility, analytical robustness and replicability of published results. Jelte M. Wicherts is in the Department of ...