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Abstract:
Substantial recent work has explored multiple mechanisms of decision-making in humans and other animals. Functionally and anatomically distinct modules have been identified, and their individual properties have been examined using intricate behavioural and neural tools. One critical distinction, which is related to many popular psychological dichotomies, is between model-based or goal-directed control, which is reflective and depends on prospective reasoning, and model-free or habitual control, which is reflexive, and depends on retrospective learning. I will show how to see these two systems in generative and discriminative terms, respectively, and discuss their interaction and integration.
