BIBLIOGRAPHY
- Binet and Simon . 1910 . The Development of Intelligence in Children Vineland : Trans. Kite .
- Healy and Fernald . 1911 . Tests for Practical Mental Classification . Psychol. Mono. , XIII ( 54 )
- Yoakum Yerkes.—Army Mental Tests (Holt, 1920)
- S. C. Dodd.—“International Group Mental Tests,” Ph.D. Thesis, Princeton, 1926.
- E. L. Thorndike and Others.—“The Measurement of Intelligence,” Teachers' College, Columbia, 1927.
- C. Spearman.—The Abilities of Man (Macmillan, 1927)
- C. Spearman.—The Nature of “Intelligence” and the Principles of Cognition (Macmillan, 1923)
- Line , W. 1930 . The Growth of Visual Perception in Children . Brit. Journ. Psychol. Mono. Suppl. ,
- L. M. Terman.—The Measurement of Intelligence
- Holzinger , K. J. 1930 . Statistical Resumé of the Two Factor Theory Chicago Univ. Press .
- W. Stephenson.—Ph.D. Thesis, Univ. London Library. Also his “Studies of Verbal and Non-verbal Tests,” Journ. Educ. Psychol., xxii, 1931 167–185, 255–267, 334–350
- Davey , C. M. 1926 . Brit. Journ. Psychol , XVII
- Hamid.—Ibid., xvi, 1925 Further information about the tests discussed in the present paper may be obtained from the writer.