Investigates preschool children's ability (n = 30) to discriminate age, and subject's use of different facial areas in ranking facial photographs into age order. Results indicate subjects from 3 to 9 years can successfully rank the photos. Compared with other facial features, the eye region was most important for success in the age ranking task.…

Four experiments assessed converging aspects of four-month-old infants' perceptions of visual patterns. Results together corroborate and extend previous findings that vertical symmetry has a special status in early perceptual development and that infants can perceive pattern wholes. (Author/AS)

Abilities of individuals (n=42), either with or without mental retardation, to search for and detect changes to naturalistic scenes were investigated. Individuals with mental retardation required more time to detect changes, especially changes of marginal interest. Eye-tracking analysis of six participants suggested that individuals with mental…

This study examined whether 49 adults with mild or moderate mental retardation could perform reliably enough on the Penn Facial Discrimination Task to make this a useful research measure for evaluating visual-receptive processing. Results found subjects generally performed well above chance level, that retest reliability was reasonably high, and…

The effectiveness of training procedures which used visual-visual arbitrary matching, blocked-trial matching-to-sample, and successive discrimination training to teach visual-visual discrimination of two-dimensional forms was evaluated with two men having severe mental retardation. Results indicated that the procedures did establish conditional…

Three studies explore the development of discrimination and memory for symmetry in preschoolers four to six years of age. Issues addressed include the young child's ability to discriminate and reproduce symmetry, and the effects of pattern orientation and complexity on the young child's symmetry discrimination and reproduction. Results indicate…