Arabic digits are one of the most ubiquitous symbol sets in the world. While there have been many investigations into the neural processing of the semantic information digits represent (e.g. through numerical comparison tasks), little is known about the neural mechanisms which support the processing of digits as visual symbols. To characterise the component neurocognitive mechanisms which under...

The last two centuries have produced, transformed and destroyed a myriad of political symbols of a linguistic, visual and ritual form. Between, say 1790 and 1990 the political sphere witnessed both an explosion in the generation of symbols and a radical decline of symbols. This calls for explanations. Mary Douglas and Serge Moscovici have provided insightful reflections on the theory and histor...

This study examined how 1 symbol is selected to control the allocation of attention when several symbols appear in the visual field. In Experiments 1-3, the critical target feature was color, and it was found that uninformative central arrows that matched the color of the target were selected and produced unintentional shifts of attention (i.e., involuntary, initiated slowly, producing long-las...

Crowding refers to the degradation of visual acuity for target optotypes with, versus without, surrounding features. Crowding is important clinically, however the effect of target-flanker spacing on acuity for symbols and pictures, compared to letters, has not been investigated. Five adults with corrected-to-normal vision had visual acuity measured for modified single target versions of Kay Pic...

Australian Aboriginal symbols are visual forms of knowledge that express cultural intellect. Being classified by a Western interpretation of “art” devalues thousands of years of generational knowledge systems, where visual information has been respected, appreciated and valued. This article highlights how Aboriginal creativity has little concept of aesthetical value, but is a cultural display o...

A number of studies have found that dyslexic readers suffer from visual deficits A causal relationship has yet to be established. One step toward establishing such a relationship would be to demonstrate that the degree of dyslexia can be altered by manipulating a purely visual variable. One such variable would be the size of the printed text. In a recent study (O'Brien, Mansfield, & Legge, 2000...