Developmental differences in visual backward masking. 1980

V W Lawrence, and D W Kee, and J B Hellige

2 experiments were conducted to examine developmental differences in visual recognition masking when verbal encoding and response demands are minimized. Precautions were taken in the experiments to ensure the implication of the central visual system in the backward-masking component of each experiment. Sampling was conducted across the kindergarten, third-grade, sixth-grade, and college levels. In the first experiment, no-mask target recognition was set at 100% correct. The results indicated systematic grade differences in backward masking such that older children and adults showed more rapid recognition improvement across stimulus onset asynchronies (SOAs) than did young subjects (i.e., a grade x SOA interaction). Although this finding could be interpreted to suggest developmental differences in the rate of visual information processing, such an interpretation would be inappropriate. The problem is that the masking functions for all grade levels reach asymptote at 100% correct (i.e., a ceiling effect). Thus, the grade X SOA interaction could have been produced for reasons other than rate-of-processing differences (e.g., developmental differences in the quality of stimulus reception). Thus, experiment 2 was designed to assess this possibility by evaluating developmental differences in visual backward masking when no-mask target recognition was set at the 75% level for the grades sampled. The grade x SOA interaction observed in experiment 1 was not observed in experiment 2. The results from the studies indicate that, when the ceiling effects in no-mask target recognition are removed, the visual information processing rates for children and adults can be considered equivalent.

UI MeSH Term Description Entries
D008297 Male Males
D010364 Pattern Recognition, Visual Mental process to visually perceive a critical number of facts (the pattern), such as characters, shapes, displays, or designs. Recognition, Visual Pattern,Visual Pattern Recognition
D010470 Perceptual Masking The interference of one perceptual stimulus with another causing a decrease or lessening in perceptual effectiveness. Masking, Perceptual,Maskings, Perceptual,Perceptual Maskings
D011930 Reaction Time The time from the onset of a stimulus until a response is observed. Response Latency,Response Speed,Response Time,Latency, Response,Reaction Times,Response Latencies,Response Times,Speed, Response,Speeds, Response
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D002657 Child Development The continuous sequential physiological and psychological maturing of an individual from birth up to but not including ADOLESCENCE. Infant Development,Development, Child,Development, Infant
D002675 Child, Preschool A child between the ages of 2 and 5. Children, Preschool,Preschool Child,Preschool Children
D005260 Female Females
D005556 Form Perception The sensory discrimination of a pattern, shape, or outline. Contour Perception,Contour Perceptions,Form Perceptions,Perception, Contour,Perception, Form,Perceptions, Contour,Perceptions, Form
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

Related Publications

V W Lawrence, and D W Kee, and J B Hellige
May 1975, Journal of gerontology,
V W Lawrence, and D W Kee, and J B Hellige
February 1974, Journal of experimental child psychology,
V W Lawrence, and D W Kee, and J B Hellige
July 1990, Memory & cognition,
V W Lawrence, and D W Kee, and J B Hellige
September 1978, Journal of gerontology,
V W Lawrence, and D W Kee, and J B Hellige
August 1980, Perception & psychophysics,
V W Lawrence, and D W Kee, and J B Hellige
January 2000, Seishin shinkeigaku zasshi = Psychiatria et neurologia Japonica,
V W Lawrence, and D W Kee, and J B Hellige
November 1999, The Journal of the Acoustical Society of America,
V W Lawrence, and D W Kee, and J B Hellige
June 1972, Child development,
V W Lawrence, and D W Kee, and J B Hellige
September 1975, Experimental aging research,
V W Lawrence, and D W Kee, and J B Hellige
June 1982, Journal of speech and hearing research,
Copied contents to your clipboard!