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Professor Dodge is convinced that a study of human variability not only is as important as a study of hypothetic constancy, but also brings us closer to the facts of mental life as an important condition of its development, and opens the way to an understanding of its nature. This is a very interesting concept, and the author discusses his thesis from the laboratory and clinical standpoints, always assuming an anatomic substratum for his conceptions.
After an introduction, he discusses the influence of the refractory phase on behavior and quotes some of his own work on the knee jerk and lid reflex. This is followed by chapters on the influence of relative fatigue; inhibition and variability; inhibition and summation, in which the views of Pavlov, Fröhlich, Keith Lucas, Adrian and Forbes are discussed; also by a discussion of the effects of faint stimuli on human sensory and motor reaction systems,
Conditions and Consequences of Human Variability.. Arch NeurPsych. 1932;27(3):757-758. doi:10.1001/archneurpsyc.1932.02230150273023