The Institute for Social and Economic Research and Policy is now open.  Our office hours are from: 9:00am - 5:00pm, Monday - Friday. Please refer to the COVID-19 Resource Guide for all matters related to the return to campus.  All visitors and vendors must fill out the Columbia University Health Screening Form.  We look forward to seeing you on campus.

Events

Normative Decisions Between More Than Two Alternatives

October 20, 2016

Location: 

301 Uris Hall New York, NY 10027

Event Type: 

Every-day decisions frequently require choosing among multiple alternatives. Compared to binary choice paradigms, much less is known about the computational principle of decisions with more than two options. Previous physiological and behavioral experiments have revealed puzzling properties of human/animal decisions involving more than two options, such as interactions among these options and time-dependent decision thresholds. Why the nervous system ought to have such properties and how they functionally relate to each other remains poorly understood. To address these problems, we have derived the normative strategies for general value-based decisions with multiple options, and have identified the optimal stopping-rules for value-based evidence accumulation. The resulting strategies appear complex but turn out to be well approximated by a remarkably simple neural mechanism, with time-dependent activity-normalization in a recurrent circuit controlled by an urgency signal. Our model thus reveals why the nervous system requires such activity normalization and urgency signal: they allow the nervous system to implement efficient decisions under multi-alternative choices. The model predicts a time-dependent normalization that constrains neural population activity during decision-making. Jan Drugowitsch, Harvard Medical School Registration link available at the following link: 

https://www8.gsb.columbia.edu/decisionsciences/events/speakers/Jandrugowitsch

Newsletter

Don't want to miss our interesting news and updates! Make sure to join our newsletter list.

* indicates required

Contact us

For general questions about ISERP programs, services, and events.