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Developmental Science 9:2 (2006), pp 189206 2006 The Authors. Journal compilation 2006 Blackwell Publishing Ltd. Published by Blackwell Publishing Ltd., 9600 Garsington Road,
 

Summary: Developmental Science 9:2 (2006), pp 189206
2006 The Authors. Journal compilation 2006 Blackwell Publishing Ltd. Published by Blackwell Publishing Ltd., 9600 Garsington Road,
Oxford OX4 2DQ, UK and 350 Main Street, Malden, MA 02148, USA.
Blackwell Publishing Ltd
PAPER
Visual pop-out in infants and adults
The eyes have it: visual pop-out in infants and adults
Scott A. Adler and Jazmine Orprecio
Department of Psychology, York University, Canada
Abstract
Visual search studies with adults have shown that stimuli that contain a unique perceptual feature pop out from dissimilar dis-
tractors and are unaffected by the number of distractors. Studies with very young infants have suggested that they too might
exhibit pop-out. However, infant studies have used paradigms in which pop-out is measured in seconds or minutes, whereas in
adults pop-out occurs in milliseconds. In addition, with the previous infant paradigms the effects from higher cognitive processes
such as memory cannot be separated from pop-out and selective attention. Consequently, whether infants exhibit the phenomenon
of pop-out and have selective attention mechanisms as found in adults is not clear. This study was an initial attempt to design
a paradigm that would provide a comparable measure between infants and adults, thereby allowing a more accurate determination
of the developmental course of pop-out and selective attention mechanisms. To this end, we measured 3-month-olds' and adults'
saccade latencies to visual arrays that contained either a + among Ls (target-present) or all Ls (target-absent) with set sizes
of 1, 3, 5 or 8 items. In Experiment 1, infants' saccade latencies remained unchanged in the target-present conditions as set

  

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

 

Collections: Biology and Medicine