Abstract
It is shown that Thurstone’s well known square-root function relating length of a paired-associate list with trials to criterion was the result of a minor oversight. Length-difficulty relationships actually implied by Thurstone’s learning theory are derived and discussed.
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BOGARTZ, W., & HEADRICK, ARLENE. The length-difficulty law of serial learning: An empirical function and a theoretical derivation. Psychon. Sci., 1965, 3, 357–358.
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McGEOCH, J. A., & IRION, A. L. The psychology of human learning. New York: Longmans, Green & Co., 1960.
THURSTONE, L. L. The learning function. J. gen. Psychol., 1930, 3, 469–493.
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Bogartz, W. A small error in Thurstone’s length-difficulty function. Psychon Sci 9, 109–110 (1967). https://doi.org/10.3758/BF03330783
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DOI: https://doi.org/10.3758/BF03330783