Abstract

It is shown by means of a simple mathematical derivation that Fechner's logarithmic law may (a) under some conditions be interpreted as a special case of, or as an approximation to, Stevens' power law and (b) always be considered to be an arbitrarily close piece-wise approximation to the power law by multiplying the stimulus magnitude with an appropriate variable scaling factor. The arguments behind the converse proposition by Ekman (1964) are questioned.

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