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Using Object Knowledge in Visual Tracking and Reaching
Author(s) -
Berthier Neil E.,
Bertenthal Bennett I.,
Seaks Jill D.,
Sylvia Monica R.,
Johnson Renee L.,
Clifton Rachel K.
Publication year - 2001
Publication title -
infancy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.361
H-Index - 69
eISSN - 1532-7078
pISSN - 1525-0008
DOI - 10.1207/s15327078in0202_9
Subject(s) - gaze , psychology , ball (mathematics) , task (project management) , cognitive psychology , eye tracking , tracking (education) , object permanence , communication , computer vision , computer science , cognition , cognitive development , neuroscience , mathematical analysis , pedagogy , mathematics , management , psychoanalysis , economics
Nine‐month‐old infants were presented with an engaging and challenging task of visually tracking and reaching for a rolling ball that disappeared and reappeared from behind an occluder. On some trials, the infant observed the experimenter place a barrier on the ball's track; the barrier remained partially visible above the occluder throughout the remainder of the trial. When the task involved only predictive tracking, infants' anticipatory gaze shifts were faster when no barrier was present. When the task involved both tracking and reaching, there were more reaches when no barrier was present. If the infant reached, the timing and extension of the reach and the accompanying gaze shift did not differ with regard to the barrier. Because catching the ball was quite difficult for these infants, task demands interfered with the integration of visual information and visuospatial reasoning about the barrier with the reaching action.