214 UNIVERSITY OF COLORADO STUDIES 



though the differences are not significant. This accords with results 

 obtained in other tests which show a greater variability in girls at the 

 two years nearest the age of puberty for girls. In range the average 

 errors for boys run from o to 4 . 9 and in girls from o to 5.4. 



Fig. 2 gives the distribution of the errors, the abscissae representing 

 the average error of displacement and the ordinates the number of cases. 



Conclusions 



The conclusions which seem warranted by this study are : 



1. That women are decidedly superior to men in discriminative 

 sensibility to reds and grays. 



2. That men show a decidedly greater variability in discriminating 

 reds. 



3. That in school children between the ages of eleven and fifteen 

 years there is no significant difference in perception of differences in 

 red and that the variability and range is slightly greater in girls. 



BIBLIOGRAPHY 



1. Chamberlain, A., The Child, chap, x, New York, 1900. 



2. Ellis, Havelock, Man and Woman, New York, 1904. 



3. Garbini Adriano, "Evoluzione del senso cromatica nei bambini," Arch, per 

 VAnthrop., Vol. XXIV, pp. 71-98, 1894. 



4. Gilbert, J. A., "Mental and Physical Development of School Children," Studies 

 from the Yale Psychol. Laboratory, Vol. II, pp. 42-43, 1894. 



5. Lombroso, Cesare, La donna delinquente, la prostituta e la donna normale, Rome, 

 1893. 



6. Luckey, G. W. A., "Comparative Observations on the Indirect Color Range of 

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7. Nelson, Mabel L., "The Difference between Men and Women in the Recognition 

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9. Pearson, Karl, The Chances of Death, Vol. I, London, 1897. 



10. Thompson, Helen B., Psychological Norms in Men and Women, Chicago, 1903. 



11. Thorndike, E. L., Educational Psychology, chap, xi, New York, 1904. 



12. Vitali, Vitale, "Studi antropologica in servizio della pedagogica," Vols. I and II, 

 Le Romagnole, Torino, 1896, 1898. 



