TY - JOUR
T1 - Young infants' reasoning about the physical and spatial properties of a hidden object
AU - Baillargeon, Renée
N1 - Funding Information:
This research was supported by a grant from the National Institute of Child Health and Human Development (HD-21104). I thank Ann Brown, Judy DeLoache, Jerry DeJong, Julia DeVos, Marcia Graber, Gwen Gustafson, and Stephanie Hanko-Summers for their careful reading of the manuscript; Dawn laccobucci and Stanley Wasserman, for their help with the data analysis; Earle Heffley, Oskar Richter, and Tom Kessler, for their technical assistance; and Marcia Graber, Stephanie Hanko-Summers, Anna Szado, and the undergraduates working in the Infant Cognition Laboratory at the University of Illinois, for their help with the data collection. 1 also thank the parents who kindly agreed to have their infants participate in the studies.
PY - 1987/7
Y1 - 1987/7
N2 - The present experiments examined 7-month-old infants' ability to represent and reason about the physical and spatial properties of an occluded object. In Experiment 1, two groups of infants were tested. One group saw a screen that rotated 90° upwards and then, remaining vertical, slid backwards. The results showed that the infants expected the screen to stop sliding sooner when an object stood 10, as opposed to 25, cm behind it, suggesting that they (a) represented the location of the object behind the screen and (b) used this information to estimate at what point the screen should reach the object and stop. The other group of infants saw a screen that rotated upwards and then backwards, in the manner of a drawbridge. The results showed that the infants expected the screen to stop rotating sooner when an object 20, as opposed to 4, cm-high stood behind it, suggesting that they (a) represented the height of the object behind the screen and (b) used this information to judge at what point the screen should reach the object and stop. The infants in Experiment 2 also saw a screen that rotated upwards and then backwards. The results indicated that the infants expected the screen to stop sooner when an incompressible, as opposed to a compressible, object stood behind it (the two objects were of the same height). This finding suggested that the infants (a) represented the height and the compressibility of the object behind the screen and (b) used this information to determine at what point the screen should reach the object and whether it could continue rotating past this point (by compressing the object). The results of a control experiment supported this interpretation. Together, the results of Experiments 1 and 2 indicate that, contrary to Piaget's (1954) claims, 7-month-old infants can represent and reason about the physical and spatial properties of an occluded object. These results have implications for three areas of infancy research: object permanence, physical reasoning, and representation.
AB - The present experiments examined 7-month-old infants' ability to represent and reason about the physical and spatial properties of an occluded object. In Experiment 1, two groups of infants were tested. One group saw a screen that rotated 90° upwards and then, remaining vertical, slid backwards. The results showed that the infants expected the screen to stop sliding sooner when an object stood 10, as opposed to 25, cm behind it, suggesting that they (a) represented the location of the object behind the screen and (b) used this information to estimate at what point the screen should reach the object and stop. The other group of infants saw a screen that rotated upwards and then backwards, in the manner of a drawbridge. The results showed that the infants expected the screen to stop rotating sooner when an object 20, as opposed to 4, cm-high stood behind it, suggesting that they (a) represented the height of the object behind the screen and (b) used this information to judge at what point the screen should reach the object and stop. The infants in Experiment 2 also saw a screen that rotated upwards and then backwards. The results indicated that the infants expected the screen to stop sooner when an incompressible, as opposed to a compressible, object stood behind it (the two objects were of the same height). This finding suggested that the infants (a) represented the height and the compressibility of the object behind the screen and (b) used this information to determine at what point the screen should reach the object and whether it could continue rotating past this point (by compressing the object). The results of a control experiment supported this interpretation. Together, the results of Experiments 1 and 2 indicate that, contrary to Piaget's (1954) claims, 7-month-old infants can represent and reason about the physical and spatial properties of an occluded object. These results have implications for three areas of infancy research: object permanence, physical reasoning, and representation.
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U2 - 10.1016/S0885-2014(87)90043-8
DO - 10.1016/S0885-2014(87)90043-8
M3 - Article
AN - SCOPUS:45949119394
SN - 0885-2014
VL - 2
SP - 179
EP - 200
JO - Cognitive Development
JF - Cognitive Development
IS - 3
ER -