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Limits of object persistence: young infants perceive continuity of vertical and horizontal trajectories, but not 45-degree oblique trajectories

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@article{ebd15bdf4496424594ad723303ea717d,
title = "Limits of object persistence: young infants perceive continuity of vertical and horizontal trajectories, but not 45-degree oblique trajectories",
abstract = "Previous research indicated that 4-month-old infants perceive continuity of objects moving on horizontal trajectories but appear to have difficulty processing occlusion events involving oblique trajectories. However, because perception of continuity of vertical trajectories has not been tested, it is uncertain whether this indicates a specific deficit for oblique trajectories or a specific advantage for horizontal trajectories. We evaluated the contribution of trajectory orientation and the form of occlusion in three experiments with 144 4-month-olds. Infants perceived continuity of horizontal and vertical trajectories under all conditions presented. However, they did not perceive continuity of an oblique (45˚) trajectory under any condition. Thus 4-month-olds appear unable to process continuity of a 45˚ trajectory. In a fourth experiment with 48 6- and 8-month-old infants, we demonstrated that by 6 months infants' difficulty with oblique trajectories is overcome. We suggest that young infants{\textquoteright} difficulty with oblique trajectories likely relates to immature eye movement control.",
author = "Bremner, {James Gavin} and Slater, {Alan Michael} and Mason, {Ursula Charlotte} and Joanne Spring and Scott Johnson",
year = "2017",
month = may,
doi = "10.1111/infa.12170",
language = "English",
volume = "22",
pages = "303--322",
journal = "Infancy",
issn = "1525-0008",
publisher = "WILEY-BLACKWELL PUBLISHING, INC",
number = "3",

}

RIS

TY - JOUR

T1 - Limits of object persistence

T2 - young infants perceive continuity of vertical and horizontal trajectories, but not 45-degree oblique trajectories

AU - Bremner, James Gavin

AU - Slater, Alan Michael

AU - Mason, Ursula Charlotte

AU - Spring, Joanne

AU - Johnson, Scott

PY - 2017/5

Y1 - 2017/5

N2 - Previous research indicated that 4-month-old infants perceive continuity of objects moving on horizontal trajectories but appear to have difficulty processing occlusion events involving oblique trajectories. However, because perception of continuity of vertical trajectories has not been tested, it is uncertain whether this indicates a specific deficit for oblique trajectories or a specific advantage for horizontal trajectories. We evaluated the contribution of trajectory orientation and the form of occlusion in three experiments with 144 4-month-olds. Infants perceived continuity of horizontal and vertical trajectories under all conditions presented. However, they did not perceive continuity of an oblique (45˚) trajectory under any condition. Thus 4-month-olds appear unable to process continuity of a 45˚ trajectory. In a fourth experiment with 48 6- and 8-month-old infants, we demonstrated that by 6 months infants' difficulty with oblique trajectories is overcome. We suggest that young infants’ difficulty with oblique trajectories likely relates to immature eye movement control.

AB - Previous research indicated that 4-month-old infants perceive continuity of objects moving on horizontal trajectories but appear to have difficulty processing occlusion events involving oblique trajectories. However, because perception of continuity of vertical trajectories has not been tested, it is uncertain whether this indicates a specific deficit for oblique trajectories or a specific advantage for horizontal trajectories. We evaluated the contribution of trajectory orientation and the form of occlusion in three experiments with 144 4-month-olds. Infants perceived continuity of horizontal and vertical trajectories under all conditions presented. However, they did not perceive continuity of an oblique (45˚) trajectory under any condition. Thus 4-month-olds appear unable to process continuity of a 45˚ trajectory. In a fourth experiment with 48 6- and 8-month-old infants, we demonstrated that by 6 months infants' difficulty with oblique trajectories is overcome. We suggest that young infants’ difficulty with oblique trajectories likely relates to immature eye movement control.

U2 - 10.1111/infa.12170

DO - 10.1111/infa.12170

M3 - Journal article

VL - 22

SP - 303

EP - 322

JO - Infancy

JF - Infancy

SN - 1525-0008

IS - 3

ER -