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DownloadedBy:[Adler,ScottA.]At:02:5712March2008 Infants' Visual Expectations

Summary: DownloadedBy:[Adler,ScottA.]At:02:5712March2008
Infants' Visual Expectations
and the Processing of Time
Scott A. Adler
York University
Marshall M. Haith, Denise M. Arehart,
and Elizabeth C. Lanthier
University of Denver
Visual events are defined by a number of dimensions--their location in space, con-
tent (color, shape, etc.), and time tags (onset, duration, etc.). The role of time in in-
fants' performance in the Visual Expectation Paradigm (VExP) was studied to evalu-
ate whether infants encode in their expectation representation the timing of events in
addition to their spatial location and content. In Experiment 1, 3-month-olds pro-
duced more anticipations in a temporally predictable condition than in an unpredict-
able condition, suggesting that their expectations included a timing component. No
evidence was found, however, that infants processed events' precise timing, but they
instead appeared to process events' average temporal flow rate. This was supported
in Experiment 2, in which infants trained with a shorter flow rate exhibited an in-
crease in anticipations after being shifted to a longer flow rate, whereas those trained
with a longer flow rate exhibited a decrease when shifted to a shorter flow rate. These


Source: Adler, Scott A. - Centre for Vision Research & Department of Psychology, York University (Toronto)


Collections: Biology and Medicine