Nevertheless, largely under the influence of the exaggeration of the conservation of energy, many psychologists - Wundt, Paulsen, Riehl, Jodl, Ebbinghaus, Miinsterberg, and in England Lewes, Clifford, Romanes, Stout - have accepted Fechner's psychophysical parallelism, as far at least as men and animals are concerned.
Riehl, who in Der philosophische Kriti .cis- mus (1876, &c.) proposes the non-Kantian hypothesis that, though things in themselves are unknowable through reason alone, they are knowable by empirical intuition, and therefore also by empirical thought starting from intuition.
Like all true followers of Kant, Riehl prefers epistemology to metaphysics; yet in reality he founds a metaphysics on epistemology, which he calls " critical realism," so far as it asserts a knowledge of things beyond phenomena, and " critical monism," so far as it holds that these things are unlike both physical and psychical phenomena, but are nevertheless the common basis of both.
Riehl elaborates this bare suggestion into the metaphysical theory that the single basis of physical and psychical phenomena is neither bodily nor mental, nor yet space and motion.
But whereas Fechner and Paulsen hold that all physical processes are universally accompanied by psychical processes which are the real causes of psychical sensations, Riehl rejects this paradox of universal parallelism in order to fall into the equally paradoxical hypothesis that something or other, which is neither physical not psychical, causes both the physical phenomena of matter moving in space and the psychical phenomena of mind to arise in us as its common effects.
(For an example of such misconception, which is almost universal, see Riehl, Der philosophische Kriticismus, i.
See Riehl in Vierteljahrschr.