'The clash of the (formal probability theory) titans'

Series Name Psychology Invited Speaker
Speaker Dr Emmanuel Pothos
Type Lectures & Talks
When 05 Dec 2013, 04:00PM - 05:00PM
Venue Frank & Katherine May Lecture Theatre, Henry Wellcome
Open To University staff and students
For Bookings Contact Giorgio Fuggetta g.fuggetta@le.ac.uk

Dr Emmanuel Pothos Senior Lecturer, Department of Psychology, City University London Invited by Professor Andrew Colman One of the dominant traditions in cognitive modeling is classic (Bayesian) probability (CP) theory. Yet considerable evidence has accumulated that human judgment often goes against classical principles. We discuss quantum probability (QP) theory as an alternative formal probabilistic framework for understanding cognition. In QP theory, probabilistic assessment is often strongly context and order dependent, individual states can be superposition states (which are indefinite with respect to some specific judgment), and composite systems can be entangled (they cannot be decomposed into simpler subsystems).

We review two fundamental empirical findings (the conjunction fallacy, violations of the sure thing principle in prisoner's dilemma games), which have persistently challenged classical theory, yet have straightforward accounts within quantum theory. Thursday 5th December 4pm, Frank & Katherine May Lecture Theatre, Henry Wellcome

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