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Perception of Object Unity in 2-Month-Old Infants.
Peer reviewed Peer reviewed
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
Velocity Thresholds in Human Infants: Implications for the Perception of Motion.
Peer reviewed Peer reviewed
Aslin, Richard N.; Shea, Sandra L. – Developmental Psychology, 1990
Results provided evidence that 6- and 12-week-old infants' preferences for a moving set of stripes over a stationary set were based on the velocity rather than on the temporal frequency of stripe movement. Estimated velocity thresholds of 9 degrees per second for 6 week olds and 4 degrees per second for 12 week olds extended results of previous…
Descriptors: Age Differences, Infants, Motion, Perception
Infants' Perception of Transparency.
Peer reviewed Peer reviewed
Johnson, Scott P.; Aslin, Richard N. – Developmental Psychology, 2000
Investigated 4- and 7-month-olds' perception of transparency, using computer-generated achromatic or color displays depicting a semitransparent box occluding the center of a rod. Found that 4-month-olds indicated perception of transparency in color but not in achromatic displays. Seven-month-olds showed some evidence of transparency perception in…
Descriptors: Age Differences, Comparative Analysis, Infant Behavior, Infants