In the past decade, behavioural science has gained influence in policymaking but suffered a
crisis of confidence in the replicability of its findings. Here, we describe a nascent …

An important step when designing an empirical study is to justify the sample size that will be
collected. The key aim of a sample size justification for such studies is to explain how the …

Replication—an important, uncommon, and misunderstood practice—is gaining
appreciation in psychology. Achieving replicability is important for making research …

We draw on genetics research to argue that complex psychological phenomena are most
likely determined by a multitude of causes and that any individual cause is likely to have …

Reflexivity is the act of examining one's own assumption, belief, and judgement systems,
and thinking carefully and critically about how these influence the research process. The …

Moral foundations theory has been a generative framework in moral psychology in the last 2
decades. Here, we revisit the theory and develop a new measurement tool, the Moral …

Most theories and hypotheses in psychology are verbal in nature, yet their evaluation
overwhelmingly relies on inferential statistical procedures. The validity of the move from …

Recent anecdotal and scientific reports have provided evidence of a link between COVID-19
and chemosensory impairments, such as anosmia. However, these reports have …

Conjecture about the weak replicability in social sciences has made scholars eager to
quantify the scale and scope of replication failure for a discipline. Yet small-scale manual …

Currently, there is little guidance for navigating measurement challenges that threaten
construct validity in replication research. To identify common challenges and ultimately …