The goal of the Laboratory of Computations of Cognition and Control (C³) is to study the neural mechanisms and the biomarkers associated with cognitive control in dynamic environments where events and outcomes are uncertain. This involves performance and outcome monitoring at different timescales, hierarchical reasoning, and dynamic adaptive behavior and decision making. These functions are key to our cognition and are significantly compromised in various patient populations including those with Obsessive Compulsive Disorder (OCD), Schizophrenia (SCz) and Parkinson's Disease (PD).