Forty preschoolers were directed to mentally rotate a stimulus and to discriminate the rotated stimulus from among a set of alternatives. Results are discussed in light of discrepant findings about children's kinetic imagery ability and the advisability of using this particular paradigm with young children. (Author/BS)

Introspective experiences that nine University of Tulsa (Oklahoma) faculty members (aged 29-52 years) have when acquiring cognitive skills without awareness were studied as they acquired nonconscious knowledge about a pattern of stimuli. Nonconsciously acquired knowledge was automatically used to facilitate performance, without conscious…

Examines research related to the retina's coding of visual input with emphasis on the organization of two kinds of ganglion cell receptive fields. Reviews current techniques for examining the shapes and arrangement in the retina of entire populations of nerve cells. (ML)

The ability of 40 children four and five years of age to discriminate reflections and rotations of visual stimuli was examined in a kinetic imagery task. Results revealed that prediction accuracy was associated with the existence of orientation markers on the stimuli, as well as age, sex, type of discrimination, and several interactions among the…

Two autistic children (5 and 13 years old) acquired functional sight-word reading skills in a play activity. Ss gained access to preferred toys by selecting toy labels in tasks requiring increasingly complex visual discriminations. Ss showed comprehension on probes requiring reading skills to locate toys stored in labeled boxes. (Author/CL)

Replies to argument presenting evidence against a model of habituation during early infancy which was based on the selective adaptation of feature detectors. (Author/BB)

Two experiments investigated characteristic generalized imitation procedures on a nonimitative successive visual discrimination task. (Editor)

Based on the author's master's thesis, University of Kansas, Kansas City, 1968. (JJ)

Author suggests teaching the principles of perspective outdoors where pupils can sketch neighboring trees, houses and streets. These sessions can be followed by painting lessons in which the use of color to gain perspective is then emphasized. Author includes useful hints and questions to evaluate students' grasp of subject. (PD)

Male school children of three age levels were tested on a 2-choice visual discrimination task that varied in spatial continguity of stimulus, response, and reward. Separation of stimulus from response and reward was found to retard learning. (WY)