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A new test is described which is designed to measure visual serial-order perception. A total of 331 normal Ss, including children aged 8 through 12 and groups of both adolescents and adults, were tested. Results indicate that performances of Ss free of obvious cerebral dysfunctions show a linear improvement from age 8 to about 13. After that age, gains are at a slower rate until adulthood. No sex differences were noted. The test appears to have value for providing information about the normal development of serial-order visual perception, serial-order visual memory and spatial imagery. As a neuropsychological test it is sensitive in discriminating brain-damage and cerebral dysfunction.