Letter Similarity Data Set Archive


Boles & Clifford, 1989

Boles, D.B., & Clifford, J.E. (1989). An upper- and lowercase alphabetic similarity matrix, with derived generation similarity values. Behavior Research Methods, Instruments, & Computers, 21, 579-586.

Summary:

All pairs of uppercase and lowercase were judged by participants for their visual similarity.

Procedure:

Each letter pairs was presented horizontally. Participants rated the pairs on visual similarity, with 1 representing low similarity and 5 representing high similarity.

Stimuli

The characters were not italicized and were without serifs.

Results

Results are available here. These were taken from D. B. Boles own transcription, also found here.

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