{"pk":24658,"title":"Examining the Psychological Significance of the Jumps in the Decision Process through Test-Retest Reliability Analysis","subtitle":null,"abstract":"In decision-making, the Levy flights model (LFM), an extension of the diffusion decision model, adopts a heavy-tailed distribution with the pivotal 'alpha' parameter controlling the shape of the tail. This study critically examines the theoretical foundations of alpha, emphasizing that its test-retest reliability is essential to classify it as a cognitive style measure. Our analysis confirms the alpha parameter's test-retest reliability across various occasions and tasks, supporting its role as a trait-like characteristic. The study also explores LFM parameter interrelations, despite low correlation among the other parameters (so representing distinct aspects of data), there is a pattern of moderate correlation between alpha and non-decision time. Investigating the practice effect, our analyses indicate a consistent decrease in non-decision time, threshold, and often alpha across sessions, alongside the drift-rate increase. We also employ Bayesflow for parameter estimation, evaluating its precision with different trial counts. These findings provide valuable guidelines for future LFM research.","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[{"word":"Psychology; Decision making; Bayesian modeling; Computational Modeling"}],"section":"Abstracts","is_remote":true,"remote_url":"https://escholarship.org/uc/item/8142t653","frozenauthors":[{"first_name":"Mehdi","middle_name":"","last_name":"Ebrahimi Mehr","name_suffix":"","institution":"Shahid Beheshti University","department":""},{"first_name":"Jamal","middle_name":"","last_name":"Amani Rad","name_suffix":"","institution":"Shahid Beheshti University","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"2024-01-01T18:00:00Z","render_galley":{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/24658/galley/21156/download/"},"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/24658/galley/14256/download/"},{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/24658/galley/18052/download/"},{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/24658/galley/21156/download/"}]}