Psychological Monographs Volume 10

Psychological Monographs Volume 10

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1909 edition. Excerpt: ... yellow and blue were much more regular than those with spectral red and green. In our work, the results with the Urroth and Urgriin showed as little variability as those with blue and yellow. For a more complete statement of the case see, 1010'. of Plzil0s., Psyclml. and Sci. blethods, Vol. IV., 1909, pp. 398-403 It is to be noted, moreover, that in so far as our results do not deal specifically with the determination of limits, but rather with the relative saturation of the stimuli and after-images and with the quality of the same, they are, in general, so pronounced as to be valid regardless of minor changes in illumination. than red, yellow or green, and green more stable than the two remaining colors. The results with the Urfarben seem to show the same relative stability of these several colors, in that (I) the red and the green required the addition of blue before they became even approximately stable, and that the yellow which was the Urgelb with the dark or gray backgrounds was decidedly orange with the white background; and (2) the Urblau and the Urgriin were more stable than the Urroth and the Urgelb at the brightness extremes. (c) Individual Variation. It will be seen that the proportions of the different colors required for the Urfarben were very nearly the same for observers Y and F, and that the proportions for C, in so far as they were determined, were practically the same as those for observer P. Yet there was a decided difference between the results for P and C on the one hand, and those for Y and F on the other. That this difference is not due to any chance variation is shown by the fact that repeated determination of the Urfarben invariably gave the same proportions for the same observer. Moreover, repeated more

Product details

  • Paperback | 172 pages
  • 189 x 246 x 9mm | 318g
  • United States
  • English
  • black & white illustrations
  • 1236988868
  • 9781236988867