Abstract
In a series of four experiments using line length and bisected length stimuli, performance was well above the commonly accepted maximum of nine to 15 categories. Channel capacity (measured by an information analysis) for the median Ss in the last two studies was 28 and 45 categories. These results suggest that previous research on channel capacity should be re-examined.
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1. Supported in part by NIH Grant MH 10532-01, NASA Contract NAS 1-4738 and NASA Grant NGR 47-006-028. Portions of these data were presented at the Virginia Academy of Science meeting May, 1966 (Va. J. Sci., 1966, 17, 360). I wish to thank Franklin McLean, William Ewald, Robert Zemore, and Patricia Hubbell for their assistance in collecting and analyzing the data.
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Friedman, H. Absolute judgment of more than 32 categories (5 bits) with a unidimensional visual stimulus. Psychon Sci 8, 225–226 (1967). https://doi.org/10.3758/BF03331633
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DOI: https://doi.org/10.3758/BF03331633