Adolescents identified letters presented to them on the basis of color. Subjects (n=20) with mental retardation exhibited facilitation when the target was identical to the target on the preceding trial but did not exhibit inhibition when it had been a distractor on the preceding trial. Inefficient suppression processes may result in performance…

To investigate sensory dominance in early development, a series of studies examined six-month-old infants' processing of multisensory stimulus compounds. Findings indicated that infants discriminated changes in the temporal characteristics of the auditory component but not in the visual component. This and other findings suggested that auditory…

Involving 10-month-old infants, a series of studies examined responses to temporally modulated compound auditory-visual stimuli. Findings indicated that, although the auditory modality can dominate the visual modality at 10 months of age, the visual modality can process temporal information when the temporal relationship of the information in the…

How the dual-task interference effects, observed when subjects attempted to simultaneously perform two simple tasks, are related to capacity limitations in perceptual processing of complex visual displays was studied. Results for a total of 110 undergraduates in 6 experiments support a 2-component theory of divided attention. (SLD)

Studied in three experiments the distribution and malleability of visual attention in 5-month-olds while they inspected large geometric designs. Established that infants who were short-lookers had novelty scores above chance, whereas long-lookers demonstrated chance responding. Illuminating different parts of visual display induced long-lookers to…

This paper reviews the aspects of cognitive science that relate best to using electrical and magnetic recording to understand the function of brain systems. It outlines a framework for relating cognitive activities of daily life (typing, reading) to underlying neural systems. The framework uses five levels of analysis: task, elementary operations,…

In assessing reflective gaze preference, students were assigned to right-looking, left-looking, or mixed groups. Those with more clearcut preferences were shown to have superior records of athletic achievement, consistent with the model of functional cerebral space which predicts superior simultaneous task performance for more cerebrally…

Attention and working memory limitations set strict limits on visual representations, yet researchers have little appreciation of how these limits constrain the acquisition of information in ongoing visually guided behavior. Subjects performed a brick sorting task in a virtual environment. A change was made to 1 of the features of the brick being…

Compared the timecourse of inhibition of return (IOR) of young children to that of older children and adolescents in single and double cue procedures. Found no IOR in the young children unless a double cue was used, but for older groups, found IOR at all intervals with a double cue and the typical crossover pattern, with early facilitation…

Analyzes susceptibility of two African nationalities and American subjects to the Muller-Lyer illusion and suggests that the selective attention hypothesis fails to explain all cross-cultural differences, though instructional set may modify susceptibility. Tables and bibliography. (RW)

Three experiments investigated 4-, 6-, and 8-month-olds' perception of the audible, visible, and combined attributes of bimodally specified syllables. Results suggested that at 4 months, infants attended primarily to the featural information, at 6 months primarily to the asynchrony, and at 8 months to both features independently. (Author/KB)

Multielement visual tracking and visual search are 2 tasks that are held to require visual-spatial attention. The authors used the attentional operating characteristic (AOC) method to determine whether both tasks draw continuously on the same attentional resource (i.e., whether the 2 tasks are mutually exclusive). The authors found that observers…

Three studies explored age changes and individual differences in preschoolers' sustained attention in different contexts. Found that changes occurred earlier for play and television viewing than for reaction time tasks. Results suggest that children have stable tendencies to sustain attention but that attention varies with task demands and…