References
- Aveling , F. 1912 . The Consciousness of the Universal and the Individual , 255 London : Macmillan .
- Brain , W. R. 1955 . “ Aphasia, apraxia, and agnosia ” . In Neurology , Edited by: Wilson's , S. A.K. and Bruce , A. N. Vol. 3 , 1413 – 1483 . London : Butterworth .
- Calkins , M. W. 1892 . A statistical study of pseudo-chromesthesia and of mental forms . Amer. J. Psychol , 5 : 439 – 464 .
- Galton , F. 1880 . Visualised numerals . Nature , 21 : 252 – 256 .
- Galton , F. 1883 . Inquiries into Human Faculty and its Development , 261 London : Macmillan .
- Humphrey , G. 1951 . Thinking: An Introduction to its Experimental Psychology , 331 London : Methuen .
- Klüver , H. 1931 . “ The eidetic child ” . In A Handbook of Child Psychology , Edited by: Murchison , C. Worcester , Massachusetts : Clark Univ. Press .
- McKellar , P. 1957 . Imagination and Thinking , 219 London : Cohen & West .
- Morton , D. M. 1936 . Number forms and arithmetical ability in children . Brit. J. Educ. Psychol , 6 : 53 – 73 .
- Oswald , I. 1957 . After-images from retina and brain . Quart. J. Exp. Psychol , 9 : 88 – 100 .
- Oswald , I. 1957 . The EEG, visual imagery, and attention . Quart. J. Exp. Psychol , 9 : 113 – 118 .
- Pear , T. H. 1922 . Remembering and Forgetting , 242 London : Methuen .
- Spalding , J. M. K. and Zangwill , O. L. 1950 . Disturbance of number-form in a case of brain injury . J. Neurol. Neurosurg. & Psychiat , 13 : 24 – 29 .
- Woodworth , R. S. 1915 . A revision of imageless thought . Psychol. Rev , 22 : 1 – 27 .