Elementary school students were tested on a visual search task where letter matching was based on the visual or name characteristics of letters. Visual match lists were searched faster than name match lists by all three grades. (SBT)

This study is an initial investigation of the effects of a fading procedure upon acquisition and transfer of discrimination learning with children younger than 36 months of age. (CS)

Paper presented at the Merrill-Palmer Institute on Research and Training of Infant Development (Detroit, Mich., Feb. 15-17, 1968).

This study examined the hypothesis that the effective visual field of 5-year-old children is smaller than that of 8-year-old children and adults. In addition, an effort was made to determine whether task demands affect the size of the effective visual field and if so, whether the effects on performance are different for children and adults. A…

Featured in this report is a summary of an extensive and unique study of color combinations and lighting. The summary presents the highlights of a report by Xr. Harry Helson which brings to fulfillment the complex work of this distinguished psychologist who began his inquiries in the late 50's. The report provides a method of forecasting whether a…

Experiments within the microgenetic paradigm provide an assessment of the role of stimulus structure and, inferentially, of cognitive structure on perception. Two experiments investigating the effect of redundancy (structure) in written language on visual perception are reported. Seven-letter arrays differing in percentage of redundancy were…

This study investigated whether the acuity threshold for distant targets is elevated for infants ranging in age from 24 to 63 days. Using square wave gratings and a modified staircase procedure, acuity thresholds for each of 331 infants were determined for one or more of the distances 30 cm, 60 cm, 90 cm and 150 cm. Acuity threshold was defined as…

This study tested the hypothesis that newborns selectively orient toward angular elements in their visual field. Subjects were 36 awake and alert infants under 6 days of age. For each newborn, the study compared visual attention to three separately presented stimulus patterns: a complete outline triangle, only the sides of this triangle, and only…

Thirty-two 4-year-olds made same and different judgments about pairs of stimuli requiring detailed comparison. Two treatment conditions were employed: a judgment-only condition and a justification condition in which children explained the reasons for their judgments. (Author/JMB)