Colour-Blindness: with a Comparison of Different Methods of Testing Colour-Blindness

Abstract

THAT theories are useful servants but bad masters is borne out by a study of this book. It embodies “the results of research on red-green colourblind subjects,” and “the tests were carried out unbiased by any preconceived theory and no rigid classification was attempted during the experiments themselves.” A mass of observations on ten excellent subjects, eight being students attending the graduating course in experimental psychology, and two science students, has been accumulated. All will admit that such material is of great value, but that alone it is unlikely to afford an explanation of the complex problem under investigation. Its ultimate value will depend upon the deductions drawn from it, and these must necessarily involve theoretical considerations which may support or be adverse to previous theories. In this respect it is essential that the investigator should be fully cognisant of the facts which have been elicited by previous observers, whether they support any such theory or not.

Colour-Blindness: with a Comparison of Different Methods of Testing Colour-Blindness.

By Dr. Mary Collins. (International Library of Psychology, Philosophy and Scientific Method.) Pp. xxxi + 237. (London: Kegan Paul and Co., Ltd.; New York: Harcourt, Brace and Co., Inc., 1925.) 12s. 6d. net.