The replicability of psychological research is surprisingly low. Why? In this blog post I present new evidence showing that questionable research practices are at the heart of failures to replicate psychological effects.
Quick recap. A recent publication in Science claims that only around 40% of psychological findings are replicable, based on 100 replication attempts in the Reproducibility Project Psychology (Open Science Collaboration, 2015). A few months later, a critical commentary in the same journal made all sorts of claims, including that the surprisingly low 40% replication success rate is due to replications having been unfaithful to the original studies’ methods (Gilbert et al., 2016). A little while later, I published an article in Psychonomic Bulletin & Review re-analysing the data by the 100 replication teams (Kunert, 2016). I found evidence for questionable research practices being at the heart of failures to replicate, rather than…
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