We [Lazareva, O. F., Freiburger, K. L., & Wasserman, E. A. (2004). "Pigeons concurrently categorize photographs at both basic and superordinate levels." "Psychonomic Bulletin and Review," 11, 1111-1117] previously trained four pigeons to classify color photographs into their basic-level categories (cars, chairs, flowers, or people) or into their…

A span-of-apprehension task and a backward masking technique were combined to allow measurement of the apprehension span of a sample of 34 learning disabled and normal boys about 8 to 13 years old at various time intervals following stimulus presentation. (Author/SW)

A study was conducted to determine if attentional difficulties would be found in reading disabled children and to discover if increasing the complexity of a task would result in a relative decrease in the performance of the children. Twelve dyslexic boys, aged eight and nine, and 12 normal subjects similar in age and IQ participated in the study.…

This study investigated 17-week-old infants' response to discrepancy in visual patterns as a function of rate of habituation. (BRT)

The present study examined how the magnitude of time-out duration following incorrect responses affected the ability of adults to learn simple visual discriminations. Sixty-four college students were randomly assigned to one of four groups that received a 0-, 5-, 10-, or 20-s time-out duration after an incorrect response. Each participant…

Examined the stability of two aspects of infant visual attention derived from the paired-comparison procedure in infants tested at 6, 7, and 8 months of age. The two aspects were novelty preference and exposure time. Suggests that both novelty and exposure-time scores reflect moderately stable but independent characteristics of infant behavior.…

The effects of stimulus duration and contrast on duration of visible persistence as a function of spatial frequency were investigated in normal and specific-reading-disabled children. Results suggest that disabled readers have different contrast processing at low and high spatial frequencies and indicate differences between readers in basic visual…

Two time-delay conditions for teaching complex visual discriminations to 14 normal preschoolers, 12 with mild mental retardation, and 11 with moderate mental retardation were compared. Results indicated that for all populations and stimuli, time delay of multiple dynamic distinctive-feature prompts produced learning, while time delay of the single…

Two important processes in the acquisition of visually presented information are the ability to maintain discrete perceptual events as separate in time and the ability to abstract information from brief exposures. Five phenomena were measured which appear to reflect these abilities. Critical Flicker Frequency (CFF) is the intermittency rate at…

Whether additional cues in visualized materials add to their instructional value is a question answered differently by various educational theorists. In the eight studies reviewed, experiments were designed to answer this question and other questions related to it. In three media studies using the same four treatments (oral presentation without…