Conceptual and Statistical Knowledge

 

Randomization Does Not Help Much, Comparability Does

According to R.A. Fisher, randomization “relieves the experimenter from the anxiety of considering innumerable causes by which the data may be disturbed.” Since, in particular, it is said to control for known and unknown nuisance factors that may …

Redefine statistical signifcance

We propose to change the default P-value threshold for statistical signifcance from 0.05 to 0.005 for claims of new discoveries.

Reflections on the Unintended Consequences of the Science Reform Movement

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Registered Replication Reports in the Classroom

Background: Registered Reports are an emerging publication format, which emphasizes methodological rigor over results. Integrating this format into education allows one to teach research skills when data collection is infeasible. Objective: To …

Replacing p-values with Bayes-Factors: A Miracle Cure for the Replicability Crisis in Psychological Science

A blog post about choosing Bayes Factor over p-value

Replicability syllabus (2018)

A syllabus about replicability seminar

Replicability Syllabus (2020)

This course will examine current controversies and new developments in research methods in psychology. The goal of the course is to learn to think critically about how psychological science is conducted and how conclusions are drawn. We will cover …

Replicating Studies in Which Samples of Participants Respond to Samples of Stimuli

In a direct replication, the typical goal is to reproduce a prior experimental result with a new but comparable sample of participants in a high-powered replication study. Often in psychology, the research to be replicated involves a sample of …

Repligate: Reliability and Reproducibility in Psychology Syllabus

This seminar will address issues relevant to the current controversy over the reliability of psychological research, a controversy which seems to be white-hot right now. Topics will include (but not be limited to) - Critiques of the current science, …

Reporting Effect Sizes in Original Psychological Research: A Discussion and Tutorial

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 intervals. We present principles and recommendations for research …