Before revision: Relationships to pre-existing psychophysical theory Thurstone showed that in terms of his conceptual framework, Weber's law and the so-called Weber-Fechner law, which are generally regarded as one and the same, are independent, in the sense that one may be applicable but not the other to a given collection of experimental data.
After revision: Relationships to pre-existing psychophysical theory Thurstone showed that in terms of his conceptual framework, Weber's law and the so-called Weber-Fechner law, which are sometimes (and misleadingly) regarded as one and the same, are independent, in the sense that one may be applicable but not the other to a given collection of experimental data.