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Stimulus Context and Infant Orientation Discrimination.
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Colombo, John; And Others – Journal of Experimental Child Psychology, 1984
In three experiments, the effect of additional "contextual" elements on the discrimination of the orientation of linear and curvilinear segments was investigated with four-month-old infants. Results suggest that, regarding certain stimuli and techniques of measurement, surrounding contextual segments can aid the discrimination of linear…
Descriptors: Context Effect, Infant Behavior, Infants, Spatial Ability
Individual Differences in Infant Visual Attention: Recognition of Degraded Visual Forms by Four-Month-Olds.
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Frick, Janet E.; Colombo, John – Child Development, 1996
Five experiments tested four-month-old infants' ability to recognize degraded visual targets as a function of individual differences in fixation duration. Found that short-looking infants were able to recognize degraded forms in both vertex (top or highest point)-absent and vertex-present conditions, but the vertex-absent discrimination was more…
Descriptors: Attention, Cognitive Processes, Individual Differences, Infants
Individual Differences in Infant Visual Attention: Are Short Lookers Faster Processors or Feature Processors?
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Colombo, John; And Others – Child Development, 1991
Four experiments tested four month olds on visual discrimination tasks. As the time allotted to solve these problems was shortened, infants who looked at stimuli for a short amount of time performed better than other infants, indicating that performance superiority was attributable to speed of processing. (BC)
Descriptors: Cognitive Ability, Eye Fixations, Individual Differences, Infants
The Nature and Processes of Preverbal Learning: Implications from Nine-Month-Old Infants' Discrimination Problem Solving.
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Coldren, Jeffrey T.; Colombo, John – Monographs of the Society for Research in Child Development, 1994
In three experiments, nine-month-old infants were trained to fixate on a particular feature in a pair of stimuli that varied along three dimensions. In a fourth experiment, infants were trained to fixate on a stimulus compound until reaching a learning criterion. Infants' discrimination learning under these conditions implied an ability to attend…
Descriptors: Attention, Dimensional Preference, Discrimination Learning, Eye Fixations
Developmental Changes in Infant Attention to Dynamic and Static Stimuli
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Shaddy, D. Jill; Colombo, John – Infancy, 2004
This study examined 4- and 6-month-olds' responses to static or dynamic stimuli using behavioral and heart-rate-defined measures of attention. Infants looked longest to dynamic stimuli with an audio track and least to a static stimulus that was mute. Overall, look duration declined with age to the different stimuli. The amount of time spent in…
Descriptors: Visual Stimuli, Attention, Infants, Age Differences
Individual Differences in Infant Fixation Duration: Dominance of Global versus Local Stimulus Properties.
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Colombo, John; And Others – Cognitive Development, 1995
Investigates the dominance of global versus local visual properties in four-month-old infants as a function of individual differences in fixation duration. Suggests that long-looking infants process visual information more slowly than short-looking infants, and there may be qualitative differences in the manner in which the two groups of infants…
Descriptors: Attention, Cognitive Processes, Dimensional Preference, Discrimination Learning