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Full-Text Articles in Cognitive Psychology
The Impact Of Levodopa Administration On Learning From Short-Term And Long-Term Action Consequences: A Paradigm Validation., Masood Rezaei
The Impact Of Levodopa Administration On Learning From Short-Term And Long-Term Action Consequences: A Paradigm Validation., Masood Rezaei
Electronic Thesis and Dissertation Repository
Behavioral and neuroimaging studies have identified two valuation systems in the human brain for controlling behavior known as model-free (MF) and model-based (MB). MF is based on immediate evaluation and MB is based on long-term evaluation of the outcome of our decisions. Previous studies suggest that dopamine baseline activity may play an important role in the balance between the two systems and determine how they compete or interact in controlling our actions. The overarching aims of this study is to investigate the impact of levodopa administration on learning from immediate and long-term action consequences, and to dissociate the role of …
Modelling Biased Judgement With Weighted Updating, Jesse A. Zinn
Modelling Biased Judgement With Weighted Updating, Jesse A. Zinn
Jesse A Zinn
The weighted updating model is a generalization of Bayesian updating that allows for biased beliefs by weighting the functions that constitute Bayes’ rule with real exponents. This paper shows that weighting a distribution affects the information entropy of the resulting distribution, suggesting that weighted updating can model biases in which individuals mistake the information content of data. The paper augments the base model in two ways, allowing it to account for additional biases. The first expansion involves discrimination between data. The second allows the weights to vary over time. The paper also presents a set of sufficient conditions for the …