Predictive Reaching for Occluded Objects by 6-Month-Old Infants
David Bourget (Western Ontario)
David Chalmers (ANU, NYU)
Rafael De Clercq
Ezio Di Nucci
Jonathan Jenkins Ichikawa
Jack Alan Reynolds
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Infants were presented with an object that moved into reaching space on a path that was either continuously visible or interrupted by an occluder. Infants’ reaching was reduced sharply when an occluder was present, even though the occluder itself was out of reach and did not serve as a barrier to direct reaching for the object. We account for these findings and for the apparently contrasting findings of experiments using preferential looking methods to assess infants’ object representations, by proposing that (a) object representations increase in precision over the infancy period, and (b) the precision of object representations varies in common ways at all ages as a function of object visibility and task demands.
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Claes von Hofsten (2004). An Action Perspective on Motor Development. Trends in Cognitive Sciences 8 (6):266-272.
Kerstin Rosander & Claes von Hofsten (2004). Infants' Emerging Ability to Represent Occluded Object Motion. Cognition 91 (1):1-22.
Olga Kochukhova & Gustaf Gredebäck (2007). Learning About Occlusion: Initial Assumptions and Rapid Adjustments. Cognition 105 (1):26-46.
Susan Hespos, Gustaf Gredebäck, Claes Von Hofsten & Elizabeth S. Spelke (2009). Occlusion Is Hard: Comparing Predictive Reaching for Visible and Hidden Objects in Infants and Adults. Cognitive Science 33 (8):1483-1502.
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