Bayesian just-so stories in psychology and neuroscience

Research output: Contribution to journalArticle (Academic Journal)peer-review

280 Citations (Scopus)


According to Bayesian theories in psychology and neuroscience, minds and brains are (near) optimal in solving a wide range of tasks. We challenge this view and argue that more traditional, non-Bayesian approaches are more promising. We make 3 main arguments. First, we show that the empirical evidence for Bayesian theories in psychology is weak. This weakness relates to the many arbitrary ways that priors, likelihoods, and utility functions can be altered in order to account for the data that are obtained, making the models unfalsifiable. It further relates to the fact that Bayesian theories are rarely better at predicting data compared with alternative (and simpler) non-Bayesian theories. Second, we show that the empirical evidence for Bayesian theories in neuroscience is weaker still. There are impressive mathematical analyses showing how populations of neurons could compute in a Bayesian manner but little or no evidence that they do. Third, we challenge the general scientific approach that characterizes Bayesian theorizing in cognitive science. A common premise is that theories in psychology should largely be constrained by a rational analysis of what the mind ought to do. We question this claim and argue that many of the important constraints come from biological, evolutionary, and processing (algorithmic) considerations that have no adaptive relevance to the problem per se. In our view, these factors have contributed to the development of many Bayesian "just so" stories in psychology and neuroscience; that is, mathematical analyses of cognition that can be used to explain almost any behavior as optimal.
Translated title of the contributionBayesian just-so stories in psychology and neuroscience
Original languageEnglish
Pages (from-to)389-141
Number of pages26
JournalPsychological Bulletin
Issue number3
Publication statusPublished - May 2012

Bibliographical note

Other: In press

Structured keywords

  • Language


Dive into the research topics of 'Bayesian just-so stories in psychology and neuroscience'. Together they form a unique fingerprint.

Cite this