M. Singh and B. L. Anderson proposed a perceptual theory of achromatic transparency in which the perceived transmittance of a perceived transparent filter is determined by the ratio of the Michelson contrast seen in the region of transparency to that of the background seen directly. Subsequently, B. L. Anderson, M. Singh, and J. Meng proposed that…

All of the data reported in Robilotto, Khang, and Zaidi (2002) Robilotto and Zaidi (2004), and Singh and Anderson (2002) are consistent with Robilotto and Zaidi's theory that perceived transparency (or opacity) is determined by the perceived contrast of the filter region. Kasrai and Kingdom's (2001) results also appear largely consistent with the…

One of the main theoretical challenges of vision science is to explain how the visual system interpolates missing structure. Two forms of visual completion have been distinguished on the basis of the phenomenological states that they induce. "Modal" completion refers to the formation of visible surfaces and/or contours in image regions where these…

Translations of three Arabic texts into English illustrate the differences between the aural and visual modes of text development. An analysis of the function of these modes in their social contexts explains the problems of the negative transfer of habits from one language to another. (Author/CB)

Two contrasting theories of reading are reviewed in light of recent research in psycholinguistics. A strictly "visual" model of fluent reading is contrasted with several mediational theories where auditory or articulatory coding is deemed necessary for comprehension. Surveying the research in visual information processing, oral reading,…