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Trajectory Perception and Object Continuity: Effects of Shape and Color Change on 4-Month-Olds' Perception of Object Identity
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Bremner, J. Gavin; Slater, Alan M.; Mason, Uschi C.; Spring, Jo; Johnson, Scott P. – Developmental Psychology, 2013
Previous work has demonstrated that infants use object trajectory continuity as a cue to the constant identity of an object, but results are equivocal regarding the role of object features, with some work suggesting that a change in the appearance of an object does not cue a change in identity. In an experiment involving 72 participants, we…
Descriptors: Visual Stimuli, Infants, Color, Cues
The Effects of Auditory Information on 4-Month-Old Infants' Perception of Trajectory Continuity
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Bremner, J. Gavin; Slater, Alan M.; Johnson, Scott P.; Mason, Uschi C.; Spring, Jo – Child Development, 2012
Young infants perceive an object's trajectory as continuous across occlusion provided the temporal or spatial gap in perception is small. In 3 experiments involving 72 participants the authors investigated the effects of different forms of auditory information on 4-month-olds' perception of trajectory continuity. Provision of dynamic auditory…
Descriptors: Infants, Auditory Stimuli, Perception, Child Development
Perception of Object Unity in Young Infants: The Roles of Motion, Depth, and Orientation.
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Johnson, Scott P.; Aslin, Richard N. – Cognitive Development, 1996
Two experiments examined the effects of common motion, background texture, and orientation on four-month olds' perception of unity of a partially occluded rod. Results indicated that infants' perception of object unity is not dependent on a single visual cue but on a variety of cues including motion, interposition, depth cues, background texture,…
Descriptors: Depth Perception, Infants, Motion, Object Permanence
Conditions for Young Infants' Perception of Object Trajectories
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Bremner, J. Gavin; Johnson, Scott P.; Slater, Alan; Mason, Uschi; Foster, Kirsty; Cheshire, Andrea; Spring, Joanne – Child Development, 2005
When an object moves behind an occluder and re-emerges, 4-month-old infants perceive trajectory continuity only when the occluder is narrow, raising the question of whether time or distance out of sight is the important constraining variable. One hundred and forty 4-month-olds were tested in five experiments aimed to disambiguate time and distance…
Descriptors: Infants, Infant Behavior, Perceptual Development, Visual Perception
Where Infants Look Determines How They See: Eye Movements and Object Perception Performance in 3-Month-Olds
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Johnson, Scott P.; Slemmer, Jonathan A.; Amso, Dima – Infancy, 2004
A fundamental question of perceptual development concerns how infants come to perceive partly hidden objects as unified across a spatial gap imposed by an occluder. Much is known about the time course of development of perceptual completion during the first several months after birth, as well as some of the visual information that supports unity…
Descriptors: Object Permanence, Eye Movements, Infants, Human Body
Perception of Object Unity in 2-Month-Old Infants.
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Johnson, Scott P.; Aslin, Richard N. – Developmental Psychology, 1995
Examined perception of object unity in partial occlusion in 72 infants. Recorded how long subjects looked at a display of complete and incomplete rods. In test and control conditions, infants looked longer at broken rods than at complete rods, suggesting that infants' cognitive, visual, or attentional skills may be insufficient to support…
Descriptors: Attention, Attention Span, Cognitive Development, Cognitive Processes