Browsing Psychology by Author "Dolan, RJ"
Now showing items 1-6 of 6
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Assigning the right credit to the wrong action: compulsivity in the general population is associated with augmented outcome-irrelevant value-based learning.
Shahar, N; Hauser, TU; Moran, R; Moutoussis, M; NSPN consortium; Bullmore, ET; Dolan, RJ (Nature Research, 2021-11-05)Compulsive behavior is enacted under a belief that a specific act controls the likelihood of an undesired future event. Compulsive behaviors are widespread in the general population despite having no causal relationship ... -
Dopamine enhances model-free credit assignment through boosting of retrospective model-based inference.
Deserno, L; Moran, R; Michely, J; Lee, Y; Dayan, P; Dolan, RJ (eLife, 2021-12-09)Dopamine is implicated in representing model-free (MF) reward prediction errors a as well as influencing model-based (MB) credit assignment and choice. Putative cooperative interactions between MB and MF systems include a ... -
Efficiency and prioritization of inference-based credit assignment.
Moran, R; Dayan, P; Dolan, RJ (Elsevier, 2021-07-12)Organisms adapt to their environments by learning to approach states that predict rewards and avoid states associated with punishments. Knowledge about the affective value of states often relies on credit assignment (CA), ... -
Human complex exploration strategies are enriched by noradrenaline-modulated heuristics.
Dubois, M; Habicht, J; Michely, J; Moran, R; Dolan, RJ; Hauser, TU (eLife, 2021-01-04)An exploration-exploitation trade-off, the arbitration between sampling a lesser-known against a known rich option, is thought to be solved using computationally demanding exploration algorithms. Given known limitations ... -
Human subjects exploit a cognitive map for credit assignment.
Moran, R; Dayan, P; Dolan, RJ (PNAS, 2021-01-26)An influential reinforcement learning framework proposes that behavior is jointly governed by model-free (MF) and model-based (MB) controllers. The former learns the values of actions directly from past encounters, and the ... -
Model based planners reflect on their model-free propensities.
Moran, R; Keramati, M; Dolan, RJ (PLOS, 2021-01)Dual-reinforcement learning theory proposes behaviour is under the tutelage of a retrospective, value-caching, model-free (MF) system and a prospective-planning, model-based (MB), system. This architecture raises a question ...