Iowa. University. Studies in Psychology Volume 3

Iowa. University. Studies in Psychology Volume 3

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 edition. Excerpt: ...of cylinder length and 6% for the area illusion, there is a residual of 1.7% which is the volume illusion in the length of the vertical cylinder. Similarly, it is 4.3% for the length of the horizontal cylinder, when the length of the cylinder is compared with a horizontal line (Case 11). When the plate is compared with the length of the cylinder, only the illusion of cylinder length and the volume illusion enter (Cases 5 and 9). If the illusion of cylinder length is 8%, the volume illusion for the length of the vertical cylinder is 1% (Case 5), and for the length of the horizontal cylinder it is 4.3% (Case 9). Of these four statements of the volume illusion for the length of the cylinder, the two upon the length of the horizontal cylinder agree with each other and those upon the length of the vertical cylinder agree with each other, but the two determinations of the illusion for the vertical cylinder are smaller than those for the horizontal cylinder. This is due to the fact that not all of the illusion of the vertical is excluded in the tests upon the vertical cylinder, a fact which will be fully explained in the next series; and perhaps also to unconscious correction for the illusion of the vertical. The illusions in the diameter of the cylinder may be considered next. In Case 12 the vertical line was compared with the diameter of the horizontal cylinder and in Case 4 the horizontal line with the diameter of the vertical cylinder; the results are 10.4% and 12% respectively. This agrees very well with the tests of a similar nature upon the cube (See Cases 1 and 2), and as the same motives for illusion are present in both forms, the explanation given for one is adequate for the other. These percentages, then, are statements of the combined area...show more

Product details

  • Paperback | 38 pages
  • 189 x 246 x 2mm | 86g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236547454
  • 9781236547453