As the practice of preregistration becomes more common, researchers need guidance in
how to report deviations from their preregistered statistical analysis plan. A principled …

Preregistration has gained traction as one of the most promising solutions to improve the
replicability of scientific effects. In this project, we compared 193 psychology studies that …

Pre-registration refers to the practice of researchers preparing a time-stamped document
describing the plans for a study. This open research tool is used to improve transparency, so …

The accommodation of evidence has been argued to be associated with several
methodological problems that should prompt evaluators to lower their confidence in the …

The replication crisis has spawned a revolution in scientific methods, aimed at increasing
the transparency, robustness, and reliability of scientific outcomes. In particular, the practice …

We quantified how many studies registered on the OSF up to November 2017 are performed
but not shared after at least 4 years. Examining a sample of 169 registered research studies …

Questionable research practices (QRPs) pose a significant threat to the integrity and
credibility of scientific research. However, historically, they remain ill-defined and a …

Preregistration is gaining ground in psychology, and a consequence of this is that
preregistered studies are more often included in meta-analyses. Preregistered studies likely …

Psychological science is meant to improve people's lives. Clinical psychology aims to
diagnose and treat debilitating psychopathologies. Cognitive psychology promises to …

I discuss Van Drimmelen's (2023) Metascience2023 presentation on researchers' decision
making during the research process. In particular, I consider his evidence that researchers' …