title: How to perfect a chocolate soufflé and other important problems.
abstract: When learning to achieve a goal through a complex series of actions, humans often group several actions into a subroutine and evaluate whether the subroutine achieved a specific subgoal. A new study reports brain responses consistent with such "hierarchical reinforcement learning."
authors.affiliation: FMRIB Centre, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DU, UK. behrens@fmrib.ox.ac.uk
authors.forename: Timothy E J
authors.initials: TE
authors.lastname: Behrens
authors.forename: Gerhard
authors.initials: G
authors.lastname: Jocham