An explanation for inconsistency between psychophysical functions derived from different scaling methods on a prothetic continuum

Yoshiaki Nakajima, Satoru Kawamura

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    In this note is proposed an hypothetical explanation for the question of why, on a prothetic continuum, a psychophysical function obtained by direct scaling is inconsistent with that obtained by indirect scaling. We explain by making the assumption that there are two stages of sensory processes which transform a given stimulus value to a perceived value serially by logarithmic and exponential functions. It is illustrated that, on a prothetic continuum, a logarithmic function should be obtained by direct scaling and a power function should be obtained by indirect scaling if our assumption is expanded mathematically.

    Original languageEnglish
    Pages (from-to)1209-1210
    Number of pages2
    JournalPerceptual and Motor Skills
    Issue number3 PART 2
    Publication statusPublished - 1996 Dec

    ASJC Scopus subject areas

    • Psychology(all)
    • Experimental and Cognitive Psychology

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