Dear All,
The CEU Department of Cognitive Science and the Center for Cognitive Computation invites
you to the following online talk titled: Updating, Evidence Evaluation, and Operator
Availability: A Framework for Understanding Belief
Speaker: Joseph Sommer (
Princeton)<https://uchv.princeton.edu/people/joseph-sommer>
Abstract: How does human belief work? In contrast to the normative assumption that people
update their beliefs via Bayes’ rule, psychologists have documented belief phenomena which
appear at odds with Bayesian updating. Moreover, the fact that people often arrive at
disparate beliefs in domains from politics to science may seem difficult to account for on
the assumption that beliefs aim at truth. Such considerations have led to the postulation
of irrational, a-rational, and instrumentally rational belief processes to explain human
belief. In this talk, I suggest that conclusions of non-Bayesian updating are too hasty. I
argue that beliefs are the outputs of multiple cognitive processes and, as such,
understanding belief requires distinguishing between updating, narrowly construed, and a
series of additional psychological processes involved in human belief. I introduce a novel
framework which situates these processes in three levels of nested influence. At Level 1,
belief updating is suggested to be approximately Bayesian and more sensitive to evidence
than it is usually given credit for. At Level 2, an additional set of processes evaluates
evidence and determines what information is presented to Level 1 for updating. Level 2
processes share two characteristics: they are necessarily heuristic and fallible, as well
as cognitively penetrable (Pylyshyn, 1999) to desires and goals. Finally, at Level 3,
factors including information representation and individual differences imply different
operators (Newell & Simon, 1972) to evidence evaluation processes at Level 2. By
manipulating Level 2 processes, people may “steer” their updating mechanisms toward
particular subsets of evidence and thereby alter the beliefs they come to possess. This
framework offers a nuanced and principled account of human belief which specifies where
and under what circumstances irrationality may enter the picture.
Chair: József Fiser
Time and date: Tuesday, April 22, 3 PM
Venue: CEU Budapest site (1051 Budapest, Nádor u. 15.) N15. room 101. Quantum.
Zoom Meeting:
https://ceu-edu.zoom.us/j/93615526968?pwd=Ct5B3XyvNeUM4zxnLoUJCHTahk0HLv.1
Meeting ID: 936 1552 6968
Passcode: 431804
Please, be informed that video/photo recording might take place at the event and the
edited version of the video material might be published to communicate or promote CEU
PU's activities. Please, find our Privacy Notice
here<https://www.ceu.edu/privacy>cy>.
Best regards,
[Central European University]
Ildikó Varga
Department Coordinator (Budapest)
Department of Cognitive Science<http://cognitivescience.ceu.edu>
Pronouns: she/her | vargai(a)ceu.edu | +36-1 327-3000 2941
H-1051 Budapest, Nádor street 15. FT 404.
CENTRAL EUROPEAN UNIVERSITY
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