Letter Similarity Data Set Archive

Townsend, 1971

Townsend, J. T. (1971). Theoretical analysis of an alphabetic confusion matrix. Perception & Psychophisycs, 9,40-50

Original paper available here


Six participants named letters of the alphabet presented in typewriter font. Experiment involved 2 days of practice and five experimental sessions. Condition 1 had white noise pre-mask, the stimulus letter, followed by a fixation point. Condition 2 also had post-stimulus noise field with jumbled letters.


Condition 1:
Condition 2:

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