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We use computational models to explain human learning and planning. We draw from reinforcement learning and bayesian frameworks to study basic cognition and psychopathology.


Current work explores how planning is made less efficient in anxiety, through online control of when and how to plan, as well as how world models used to plan consolidate offline.


The lab is part of the Psychology Department and the Gonda Multidisciplinary Brain Research Center at Bar-Ilan University near Tel Aviv. We welcome prospective trainees from psychology, neuroscience, computer science, and engineering.


lab news

Oct 17, 2026 Our perspective paper with Rachel Bedder (Princeton) and Peter Hitchcock (Emory), Unravelling Repetitive Negative Thinking With Reinforcement Learning, was accepted at Clinical Psychological Science!
Oct 04, 2026 The lab welcomes new members Daniel Toledano (PhD candidate, Tel Aviv University), Diana Vrubel (MSc, Higher School of Economics), and Noam Gil-Adi (MA, Ben-Gurion University)!
Oct 01, 2026 Dafna Yavetz was selected to attend NeuroBridges 2026, a fully funded summer school in neuroscience and decision making in Cluny, France (October 4–15). Congratulations Dafna!
Aug 25, 2026 Our first lab publication! Article by Hadas Schiff and Paul B. Sharp in Topics in Cognitive Science shows that individuals high in trait worry undergeneralize actions learned under social threat when planning in novel contexts.
Jul 17, 2026 The lab traveled to the Computational Psychiatry Conference 2026 at Yale, where Noa Yadid won a best poster award. Congratulations Noa!
Oct 29, 2025 MA fellows Dafna Yavetz (BA Princeton), Noa Yadid (BA BIU), and Adi Pizanti (BA Tel-Aviv College) begin as new lab members!!!
Jul 21, 2025 Sharp lab wins a large grant (~ 1 million USD) to investigate computations of planning efficiency and inefficiency in health and psychopathology!
Jan 25, 2025 Paul will chair a symposium at upcoming computational psychiatry conference on cognitive map biases in psychopathology
Nov 24, 2024 Post-doc Marine Hainguerlot begins starts as inaugural Sharp Lab member!
Nov 12, 2024 Article on altered planning in anxiety accepted at Trends in Cognitive Sciences!
Jul 17, 2024 Paul wins Azrieli Faculty Fellowship!
Jul 16, 2024 Article on predecessor representation accepted at Nature Human Behaviour!

Watch a TED-style talk describing our research: