Preschool, third grade and fifth grade children were presented with two choice-reaction time experiments in which probe stimulus quality was manipulated, to measure the effects of probe stimulus degradation at three developmental levels. Results support the hypothesis that children and adults employ similar strategies in preprocessing degraded…

Comparisons of the regression profile and correlations of physical measures with latency for a 5-year-old subject (who performed 1250 trials in a form recognition task) with those for a group of 25 adults indicated that use of form information was highly consistent across age levels. (Author/WY)

Presents results of two experiments which measured contrast sensitivity function in infants. Information concerning development of visual acuity, low frequency attenuation, and sensitivity to contrast were collected. Results provide an approximate picture of and means for detection of infants' pattern information. (Author/DB)

This experiment examines extended learning over a 4-day period in infants exposed to responsive and unresponsive wooden mobiles. Frequency of kicks and attention to the mobile increased over the first three days and was found to vary with the introduction of a novel mobile on day four. (GO)

In three experiments, three normal preschoolers were presented with sorting tasks ordinarily insoluble for four-year-olds. Found that, although the subjects had difficulty correctly sorting the pictures when told what criterion to sort by, they could provide correct answers when asked what they were looking for. This self-instructional effect was…

Results from three studies involving college, third grade, and kindergarten subjects, suggest that individuals across a wide age range are able to use the visual properties of a stimulus for only a very brief period as the basis for making matched judgments. (Author/SDH)

A recall paradigm tested twenty-four 5-year-olds and twenty-four adults on short-term recognition memory for briefly presented visual information. Results indicate that processes other than verbal labeling are probably more responsible for age differences in immediate memory performance than labeling. (JH)

Three experiments were conducted to examine whether infants can detect the color of stationary and moving objects and maintain this discrimination over change in velocity. Subjects were 80 infants ages 8 to 20 weeks. (MP)

Three experiments evaluated color specificity knowledge and related semantic effects on recognition memory. (Author/SB)

Investigated the influence of vertical, horizontal, and diagonal symmetry on recognition memory in preschool, kindergarten, and second-grade children. The influence of contour was also investigated. Children were trained to attend to axes of symmetry in order to improve performance on a memory task. (Author/DB)

Examined the hypothesis that good and poor readers would differ in their ability to order stimuli that can be easily recoded as words and stored in phonetic form, but not in their ability to order nonlinguistic stimuli that do not lend themselves to phonetic recoding in short-term memory. (Author/DB)

Two experiments investigated perceptual primacy of dimensional and similarity relations in stimulus classifications of younger and older subjects. Results support a differential-sensitivity view of perceptual development which asserts that individuals at all ages primarily perceive and use separate relations. (RWB)