A coordinated replication effort conducted across 17 labs found no evidence that surreptitiously inducing people to smile or frown affects their emotional state. The findings of the replication project are published as part of a Registered Replication Report (RRR) in Perspectives on Psychological Science, a journal of the Association for More

In last month’s column, I worried about whether encouraging us to preregister our hypotheses and analysis plan before running studies would stifle discovery. I came to the conclusion that it needn’t — but that we need to guard against letting the practice run away with itself. In this column, I More