APA Dictionary of Psychology

a type of visual word-form dyslexia manifested by letter-by-letter reading. For example, an affected individual reading the word dog would say, “D-O-G spells dog.” Such individuals may have normal spelling and writing ability but cannot read back what they have written down. In most cases, they have lesions located near the junctions of the occipital, temporal, and parietal lobes (the left angular gyrus) of the brain. Modern imaging studies also implicate these regions in word recognition.