Printed words that have a transposed-letter (TL) neighbor (e.g., angel has the TL neighbor angle) have been shown to be more difficult to process, in a range of paradigms, than words that do not have a TL neighbor. However, eye movement evidence suggests that this processing difficulty may occur on only a subset of trials. To investigate this…

Although a feature detection theory of pattern recognition is consistent with many recent physiological findings, the specific rules governing the perception of the distinctive features of letters have not yet been determined. This article presents two new experimental procedures for determining these rules. (Editor)

Reports on experiments designed to explore the way the processing unit depends on the information in the component letters and the information contained in their arrangements in a familiar letter string. Hypotheses were tested by degrading the quality of individual letters and by spacing the letters irregularly. (CLK)