Studies; Psychological Series Volume 2

Studies; Psychological Series Volume 2

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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. 1907 edition. Excerpt: ...are inserted here for the purpose of comparison. 1 LiglU Intensity and Depth Perception. (Am. Jour, of Psvch., vol. VII, pp. 518-532.) These fi-ures repres-t the av-a-es of a eumb-of-ases ie some of whi-h a partial effe-t remaieed with a smallop-ie-thae the dis-was-raduated to measure exa-tly; the minimum poiet was, in those-ases, tak-as o. The "equal" limits had en be-passed at-0, more thae whi-h the se-to7s of the dis-would not admit. Remarks on the Tables: ( i ) Division I of the tables shows the lowest point for each absolute intensity at which the stereoscopic effect was complete, Division II the point at which it had entirely ceased. Between these points there was a region of partial or incomplete combination. Here the outlines were sometimes confusedly intermingled, sometimes the complete stereoscopic effect would alternately appear and disappear, and again there would occur the phenomenon of the competition of the vision-fields, first one and then another set of lines becoming distinct. (2) In the last division of the tables, which gives for each absolute intensity the amount of light which can be admitted to one eye without producing any change in the brightness of the common vision-field, it will be observed that the results are less regular than in Tables I-III in the preceding section. But that is probably because these results represent the averages of a smaller number of trials. The judgments concerning light intensity are more difficult than those regarding the stereoscopic effect. (3) All the results are slightly less regular with the highest intensities used, owing probably to those intensities being somewhat near the "upper limit" for the eyes adapted to the darkened room. (4) Where fractions of degrees are...show more

Product details

  • Paperback | 60 pages
  • 189 x 246 x 3mm | 127g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236549236
  • 9781236549235