Compared was the performance of 17 preschool and 10 early elementary educable mentally retarded (EMR) children with the performance of 50 normal preschool children on a developmental sequence of tasks in visual perception. Tested were the skills of recognition, discrimination, recall, and reconstruction of common objects, size concepts, shape…

Compared was the performance of nine educable mentally retarded (EMR) children (mean age 9 years) with the performance of 50 normal kindergarten children on a test of visual perception at the abstract level. The test of 17 items involved the dimensions of size, shape, and color at four steps of skill attainment (recognition, discrimination,…

A model for sequencing tasks in the area of visual perception was developed. This paper reports an attempt to validate the structure of the model. The performance of 50 normal preschool children on a 47 item test was studied. The results obtained support the use of the model as a framework for developing visual perception tasks. (Author)