Recognition and confusion of the lowercase alphabet

Abstract

The confusion matrix for the full lowercase English alphabet is estimated, based upon 25 trials per letter for each of seven subjects. Average correct recognition was controlled to 0.5 by limiting brightness and duration of displays to individually determined levels. Comparison of the obtained data to that reported by Bouma 11971t for eccentric vision supports the conclusion that limited energy foveal recognition is qualitatively different from eccentric vision recognition. Comparison of the obtained data to the uppercase confusion matrix reported by Townsend (1971) supports the inference that recognition performance has more between-letter variability for both recognizability and confusion pairings for the lowercase alphabet than for the upper. © 1977 Psychonomic Society, Inc.