Resources

About two months ago, I published an interview with Richard Poynder in which he discussed his recent announcement that he was “signing off from reporting on open access,” because “the movement has failed and is being rebranded in order to obscure the …

A video about psychology being trouble

We describe what is a pre-analysis plan (PAP) and why you should use one. We emphasize the potential political uses of PAPs and, in particular, how the PAP is in this respect a uniquely powerful tool for increasing the likelihood that evidence …

For almost half a century, Paul Meehl educated psychologists about how the mindless use of null-hypothesis significance tests made research on theories in the social sciences basically uninterpretable. In response to the replication crisis, reforms …

Newly discovered true (non-null) associations often have inflated effects compared with the true effect sizes. I discuss here the main reasons for this inflation. First, theoretical considerations prove that when true discovery is claimed based on …

Low power in experimental psychology is an oft-discussed problem. We show in the context of the Replicability Project: Psychology (Open Science Collaboration, 2015) that sample sizes are so small in psychology that often one cannot detect even large …

There is increasing concern that most current published research findings are false. The probability that a research claim is true may depend on study power and bias, the number of other studies on the same question, and, importantly, the ratio of …

I’m thrilled to be the Transform to Open Science lead for NASA, which has a 60-year legacy of pushing the limits of how science is used to understand the Universe, planetary systems and life on Earth. Much of NASA’s success can be attributed to a …

This post discusses the why p value around .048 should be rare

I must admit that when I first heard of the effort to get psychological scientists to preregister their studies (that is, to submit to a journal a study’s hypotheses and a plan for how the data will be analyzed before that study has been run), I had …