In response to the replication crisis, many psychologists recommended that the field adopt
several proposed reforms to research practices, such as preregistration, to make research …

Background Meta-analyses play an important role in cumulative science by combining
information across multiple studies and attempting to provide effect size estimates corrected …

Scientific methods of investigation offer systematic ways to gather information about the
world; and in the field of psychology application of such methods should lead to a better …

Publication bias is a substantial problem for the credibility of research in general and of meta-
analyses in particular, as it yields overestimated effects and may suggest the existence of …

Cohen (1962) pointed out the importance of statistical power for psychology as a science,
but statistical power of studies has not increased, while the number of studies in a single …

Statistical practice in psychological science is undergoing reform which is reflected in part by
strong recommendations for reporting and interpreting effect sizes and their confidence …

In the biggest project of its kind, Brian Nosek, a social psychologist and head of the Center
for Open Science in Charlottesville, Virginia, and 269 co-authors repeated work reported in …

The “replication crisis” describes recent difficulties in replicating studies in various scientific
fields, most notably psychology. The available evidence primarily documents replication …

We review and evaluate selection methods, a prominent class of techniques first proposed
by Hedges (1984) that assess and adjust for publication bias in meta-analysis, via an …

Effect sizes are underappreciated and often misinterpreted—the most common mistakes
being to describe them in ways that are uninformative (eg, using arbitrary standards) or …