The next talk in the CDC seminar series will be given by
Hanna Marno, CEU
Date: Wednesday, May 25, 2011, 5 PM
Location: CEU Cognitive Development Center, Hattyú u. 14, 3rd floor
How do we learn about objects in the context of communication?
Abstract: Humans, uniquely among animals, learn from each other by
receiving semantic information via communication. It has been
hypothesized that the emergence of this ability is supported by
perceptual biases in learning that would make people more likely to
extract semantically relevant features of a scene in a communicative
context. According to this hypothesis, when people observe an object
in an ambiguous communicative context, they would be biased to encode
the permanent features of the object, such as its colour or shape, at
the expense of its transient features, such as its location. Although
experimental evidence with young infants corroborated this proposal,
it has been unclear whether the same tendency still exists in adults.
I will present a series of studies that provides evidence that,
similarly to infants, adults have a tendency to preferentially encode
permanent features of objects under communicative contexts. By using
a change detection paradigm, our first series of studies focused on
immediate perceptual coding. We found that people more likely detect
changes of identity than changes of location of objects when the
objects are presented in the context of communication. Our second
series of studies tested the long-term effect of communicative cues on
memory representations. By using a recall task, we found that subjects
memorised and recalled the permanent features of objects more reliably
in situations where the objects were encountered in a communicative
context. Together these studies shed new light on the complex
interaction between communication and learning in humans.
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