Statistical power analysis provides the conventional approach to assess error rates when designing a research study. However, power analysis is flawed in that a narrow emphasis on statistical significance is placed as the primary focus of study …
Reprodutibilidade e replicabilidade de estudos científicos.
Randomização, cegamento, planejamento amostral e pré-registro de projeto. Diferença entre estudos exploratórios e confirmatórios, P hacking, HARKing e double dipping. Práticas de …
The editors of the Journal of Advanced Academics comment on Makel (2014). The replicability crisis in psychology is summarized in terms of three focal issues: the “file drawer” problem, lack of replication studies, and the null hypothesis …
Protzko et al.1 describe a project in which internal tests of pilot-tested hypotheses and independent replications embraced “rigour-enhancing practices” such as confirmatory tests, large sample sizes, preregistration and methodological transparency. …
The verity of results about a psychological construct hinges on the validity of its measurement, making construct validation a fundamental methodology to the scientific process. We reviewed a representative sample of articles published in the Journal …
Publication bias and questionable research practices in primary research can lead to badly overestimated effects in meta-analysis. Methodologists have proposed a variety of statistical approaches to correct for such overestimation. However, it is not …
Effect size information is essential for the scientific enterprise and plays an increasingly central role in the scientific process. We extracted 147,328 correlations and developed a hierarchical taxonomy of variables reported in Journal of Applied …
DAGitty is a browser-based environment for creating, editing, and analyzing causal diagrams (also known as directed acyclic graphs or causal Bayesian networks). The focus is on the use of causal diagrams for minimizing bias in empirical studies in …
Background. Attribution to the original contributor upon reuse of published data is important both as a reward for data creators and to document the provenance of research findings. Previous studies have found that papers with publicly available …
This paper is a study of the decisions that researchers take during the execution of a research plan: their researcher discretion. Flexible research methods are generally seen as undesirable, and many methodologists urge to eliminate these so-called …