Coty is an international leader in the field of Dynamic Decision Making. She investigates experience-based decision making with experimental and computational cognitive modeling methods to determine when and how individuals rely on experience to make decisions and how experience helps them adapt to novel situations. In collaboration with her colleagues, she developed a theory of learning and decisions from experience in dynamic tasks called Instance-Based Learning Theory (IBLT). IBLT's proposed learning and decision mechanisms have been implemented computationally in a number of cognitive models that demonstrate accurate predictions of human behavior and provide explanations of the processes in experience-based decision making. IBLT was originally developed with the support of the Army Research Laboratories (ARL, ADA-CTA).

Coty is a professor in the department of Social and Decision Sciences at Carnegie Mellon University and the founding Director of the Dynamic Decision Making Laboratory. The laboratory is an interdisciplinary center composed of post-doctoral fellows, students, research assistants, and visitors from all over the world, who hold and pursue degrees in diverse disciplines such as engineering, psychology, social science, and human factors. She has mentored many post-doctoral and graduate students while maintaining a productive research program. Coty is affiliated faculty with the Human-Computer Interaction Institute, the Center for Cognitive Brain Imaging, and the Center for Neural Basis of Cognition at Carnegie Mellon University; and with the Center for Research on Training at University of Colorado. She is part of the editorial board of the Journal of Behavioral Decision Making, Decision, American Journal of Psychology, and Human Factors; and Associate Editor of the Journal of Cognitive Engineering and Decision Making and System Dynamics Review. She is a Human Factors and Ergonomics Society Fellow, where she maintains an active role in the annual meeting as Chair of the General Sessions and Program Committee.

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