Conclusion
The results suggest that our metabolic state determines risk‐taking biases when we lack explicit descriptions.Our findings are the first account of how hunger differentially modulates decision‐making for experienced and described risks in the same individual. We complement existing results and provide a precise index of preference change, with a formal computational model of how it might arise. This framework may be widely applicable to states of biological need, and reflect a new axis in the neurochemical and affective control of cognition.

Rafal Bogacz and Sanjay G. Manohar contributed equally to this work.