Uses a diode array spectrometer to explain why blue objects appear red when viewed through the yellowish amber lens of "blue blocking" sunglasses. (JRH)

This study compared visual word recognition (speechreading) in video sequences showing either full face or lips plus mandible to 26 normal hearing college students and 4 adults with bilateral sensorineural hearing loss. Percent phoneme correct scores were similar in the two conditions and scores significantly improved for the repeated measure in…

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…

Three experiments examined whether the perception and retention of feature relations, thought to be critical for object recognition in adults, are evident in early infancy. Three month olds' 24-hour retention was disrupted when features of a 6-item mobile were recombined, indicating that they not only encode feature relations but also remember…

Explores the relationship between virtual reality (VR) stimulation and perceptual equivalence. Topics include perceived realism; creating a virtual illusion; displayed realism; and VR as an instructional technology. (Author/AEF)

Tested 160 children on a Stroop-like day-night test that involved 2 rules. Also tested for whether remembering two rules alone was sufficient to cause difficulty. Concludes that the requirement to learn and remember two rules is not in itself sufficient to account for the poor performance of younger children (under five) in the experiment. (DR)

A unified theory of visual recognition and attentional selection is developed by integrating the biased-choice model for single-stimulus recognition with a choice model for selection from multielement displays in a race model framework. The theory is applied to findings from previous studies and quantitative fits are encouraging. (SLD)

Three experiments explored the effect of introducing novel information about a central target after a short delay on six-month-old's recognition of the original target, the novel exposure target, and a completely novel one. They found that the infants' memory of a central target is resistant to impairment by conflicting postevent information after…

Presents 7 experiments with 118 undergraduates tracking multiple randomly moving visual elements under various conditions. Observers spontaneously grouped the target elements and directed attention toward this coherent nonrigid virtual object. Results support object-based theories of attention and show that perceptual grouping, a purely…

To gather normative observations on a visual memory test developed by A. Rey (1964), it was administered to 100 temporal-lobe epilepsy patients with memory deficits and 56 outpatients with neurological disorders. Results suggest a cutoff score of 7 on the memory test may alert the clinician to possible factitious memory complaints. (SLD)

Visual search data are given a unified quantitative explanation by a model of how spatial maps in the parietal cortex and object recognition categories in the inferotemporal cortex deploy attentional resources as they reciprocally interact with visual representations in the prestriate cortex. (Author/SLD)

Used event-related potentials to examine infants' ability to form representations of stimuli presented in a haptic modality and to then recognize these stimuli as familiar when the stimuli were subsequently presented in a visual modality. Found that in certain conditions infants encoded the haptically familiarized object, then transferred their…

Results from a study in which 25 deaf children and 25 hearing children completed a vocabulary test and a compound stimulus visual information task support the hypothesis that performance on cognitive tasks is dependent on compatibility of task demands with a coding orientation. (SLD)

The Thatcher illusion, in which the inverted mouth and eyes of a face appear grotesque when upright, but not when the whole configuration is inverted, was studied in 3 experiments involving 89 undergraduates. Results suggest that the illusion represents a disruption of encoding of holistic information when faces are inverted. (SLD)

Three experiments tested the hypothesis that the differences in infants' time of looking at a stimulus are due to infants' differential sensitivity to global and local visual information. Found that both long- and short-looking four-month-old infants were sensitive to both types of information. These results do not support the hypothesis. (MDM)