Perceived crisis and reforms: Issues, explanations, and remedies.

An overview and discussion is made of the perceived replication crisis in terms of end problems, explanations, and remedies. Following a discussion of a published large-scale replication study and a review of the meta-analysis literature, we come to the conclusion that many effects are small and that on average the variance of the effects is roughly 10% to 25% of the population variance, most likely because of context dependencies. The proposed...