Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Flexible learning requires humans to adjust their behaviour to uncertainty. While normative learning models explain many adaptive behaviours, systematic biases-arising from inaccurate assumptions or cognitive simplifications-reveal key mechanisms of learning and their potential dysfunctions in psychiatric disorders.