Four experiments are reported exploring whether distractor pictures activate their phonological properties in the course of speech production. In Experiment 1, participants were presented with two pictures and were asked to name one while ignoring the other. Distractor pictures were phonologically related, semantically related or unrelated to the…

Visual discrimination tasks are increasingly used to explore the neurobiology of vision in rodents, but it remains unclear how the animals solve these tasks: Do they process shapes holistically, or by using low-level features such as luminance and angle acuity? In the present study we found that when discriminating triangles from squares, rats did…

Using normal adult readers, this study examined the relative involvement of magnocellular and parvocellular processes in reading English phonologically regular pseudowords and irregular words presented in isolation and in contiguity from left to right. The data showed that a low temporal frequency visual measure that implied more parvocellular…

In order to explain the cognitive and cerebral mechanisms responsible for the visuospatial peak in autism, and to document its specificity to this condition, a group of eight high-functioning individuals with autism and a visuospatial peak (HFA-P) performed a modified block-design task (BDT; subtest from Wechsler scales) at various levels of…

This paper reports an example of a situation in which university students had to solve geometrical problems presented to them dynamically using the interactive computerized environment of the "MicroWorlds Project Builder". In the process of the problem solving, the students used ten different solution strategies. The unsuccessful…

A study investigated some of the ways in which phenomena are perceived and translated into speech, especially in the assignment of agents in a given situation. Subjects were 16 adults with infant children. The adults were shown the Visual Cliff series of pictures of an infant crawling to its mother across a glass sheet covering an open space with…

Visual orientation toward a peripheral stimulus by newborns and 7-week-old infants was examined with both a central stimulus present and absent. General conclusion is that, contrary to previous assessments, the neonate appears to exercise internal control over his sampling of the stimulus array rather than being passively captured by it.…

Describes an experiment measuring response latency which required subjects to make a word-nonword decision in response to a visually presented item. (AM)

Skilled readers read passages while their eye movements were monitored. Certain critical words were changed by the computer as the eye was in motion. Subsequent data indicated how wide the area is from which a reader acquires information during a fixation in silent reading. (Author/BJG)

Dynamic visual acuity (DVA) is defined as the performer's ability to visually discriminate parts of an object when there is relative motion between the target and the performer. According to research findings, this visual attribute may play a key role in motor-task performance. Researchers have found a significant relationship between DVA and…

IN AN ATTEMPT TO BRIDGE THE GAP BETWEEN PSYCHOPHYSICAL STUDIES OF HUE DISCRIMINATION AND ETHNOLINGUISTIC STUDIES OF HUE LABELING, AN EXPERIMENT WAS CONDUCTED COMPARING LABELING AND DISCRIMINATION FUNCTIONS FOR SPEAKERS OF INDO-EUROPEAN (AMERICAN ENGLISH) AND NON-INDO-EUROPEAN (MEXICAN INDIAN) LANGUAGES. IT WAS FOUND THAT HUE LABELING PATTERNS OF…

THE DISCRIMINATION OF PICTURES AND PICTURE ELEMENTS AMONG 5TH-, 8TH-, AND 11TH-GRADERS WAS STUDIED (1) TO DETERMINE THE DIFFERENCES IN INTERPRETATION OF SPECIFIC STATIC VISUAL STIMULI WHEN PRESENTED THROUGH TWO TYPES OF ILLUSTRATIONS (PHOTOGRAPHS AND OUTLINE DRAWINGS OF THE SAME SCENES) AND (2) TO GAIN INSIGHT INTO VARIATION IN THE INTERPRETATION…

Pioneering research has shown that infants are capable of perceptual discrimination and has provided some indication of the nature of the discrimination; that is, what stimuli are differentiable. Studies have demonstrated that significant effects exist, in stimulus-pair comparisons, for age of infant, speed of movement of stimulus during…