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Dr. Yonas' work centers on how we come to perceive the layout
of the visual world (see
Yonas research Laboratory).
His research isolates the visual information that makes perception possible
and explores when in development infants become sensitive to that information.
Most recently his group has found that while 7-month-old infants use the
location of cast shadows to direct reaching to the apparently closer of
two toys, 5-month-old infants do not do so. The finding that responsiveness
to cast shadow information appears at about 6 months is consistent with
previous work by Yonas and his collaborators on the onset of responsiveness
to six other pictorial depth cues.
Recent publications
Yonas, A., & Elieff, C., (1999). The onset of sensitivity
to linear perspective information in individual infants. Investigative
Ophthalmology and Visual Science, 40(4), 409.
Arterberry, M. E., & Yonas A. (2000). Perception of
three-dimensional shape specified by optic flow by 8-week-old infants.
Perception & Psychophysics, 62(3), 550-556.
Sen, M. G., Yonas, A., & Knill, D. C.(2001) Development
of infants' sensitivity to surface contour information for spatial layout.
Perception, 30(2), 167-176.
Yonas, A. (2001). Reflections on the study of infant
perception and cognition: What does Morgan's Canon really tell us to do?
Journal of Experimental Child Psychology, 78, 50-54.
Yonas, A., (2001) Two ecological approaches to cognition,
Human Development, 44(1), 67-70.
Abecassis, M., Sera, M. D., Yonas A., & Schwade, J.
(2001) What's in a shape? Children represent shape variability differently
than adults when naming objects. Journal of Experimental Child Psychology,
78, 213-239.
Kavsek, J. J, Waidhas, J., & Yonas, A. (2001). Über
die Perzeption illusionärer Konturierung drh Säuglinge (On the perception
of illusory contours in infancy). Zeitschrift für Entwichlungspsychologie
und Pädagogische Psycholgie, 33(2), 67-77.
Yonas, A., Granrud, C.E., Chov, M.H., & Alexander, A.J.,
(2005) Picture Perception in Infants: Do 9-month-olds Attempt to Grasp
Objects Depicted in Photographs? Infancy 8(2):147-166
Yonas, A., & Granrud, C. (in press). Infants'
Perception of Depth from Cast Shadows. Perception and Psychophysics.
Kavsek, M.J., & Yonas, A (in press) The perception
of moving subjective contours by 4 month old infants. Perception.
Research projects
- Localizing the processing of depth cues with MEG
- Development of sensitivity to pictorial cues for depth
- Sensitivity to optical expansion information for approach:
improving the ability of drivers to avoid collision with vehicles in
fog and snow.
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