Repeated investigations of the same phenomenon typically yield effect sizes that vary more
than one would expect from sampling error alone. Such variation is even found in exact …

Addresses the criticisms that clinical psychology research is characterized by generally
disappointing results, unreplicability, and poor cumulation. Results are found to be quite …

Heterogeneity emerges when multiple close or conceptual replications on the same subject
produce results that vary more than expected from the sampling error. Here we argue that …

Replicability of findings is at the heart of any empirical science. The aim of this article is to
move the current replicability debate in psychology towards concrete recommendations for …

Many people have worried that research studies are not repeated or replicated to ensure the
results are real. But in most research areas meta-analyses combining across numerous …

Psychological science's “credibility revolution” has produced an explosion of metascientific
work on improving research practices. Although much attention has been paid to replicability …

Replication initiatives in psychology continue to gather considerable attention from far
outside the field, as well as controversy from within. Some accomplishments of these …

We conducted preregistered replications of 28 classic and contemporary published findings,
with protocols that were peer reviewed in advance, to examine variation in effect magnitudes …

In principle, successful replications should enhance the credibility of scientific findings, and
failed replications should reduce credibility. Yet it is unknown how replication typically …

We revisit the results of the recent Reproducibility Project: Psychology by the Open Science
Collaboration. We compute Bayes factors—a quantity that can be used to express …