Optimal control methods for
simulating
the perception of causality in young infants
1999, In M. Hahn & S.C. Stoness
(Eds.), Proceedings of the Twenty First Annual Conference
of the Cognitive Science Society,
(pp. 625-630), New Jersey: Erlbaum
Matthew Schlesinger
University of Massachusetts, Amherst
Andrew Barto
University of Massachusetts, Amherst
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Abstract: There is
a growing debate among developmental theorists concerning
the perception of causality in young infants. Some theorists
advocate a top-down view, e.g., that infants reason about
causal events on the basis of intuitive physical principles.
Others argue instead for a bottom-up view of infant causal
knowledge, in which causal perception emerges from a simple
set of associative learning rules. In order to test the
limits of the bottom-up view, we propose an optimal control
model (OCM) of infant causal perception. OCM is trained
to find an optimal pattern of eye movements for maintaining
sight of a target object. We first present a series of
simulations which illustrate OCM's ability to anticipate
the outcome of novel, occluded causal events, and then
compare OCM's performance with that of 9-month-old infants.
The implications for developmental theory and research
are discussed.
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