The Essentials of Psychology

The Essentials of Psychology

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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. 1917 edition. Excerpt: ...the tendency to overestimate small angles and to underestimate obtuse angles. Square surfaces are nearly always seen in perspective, which makes right angles appear to be either acute or obtuse. The most frequent association with these angles is a right angle, --an over-estimation of the small and an underestimation of the large angle. This association that has become fixed through the great preponderance of rectangular objects leads to error in many different cases. A circle with a square inscribed seems broken at the corners of the square, as may be seen in Figure 23. Where an ui- v i c. i Fig. 23--(From oblique line cuts a plane figure or two plane Titchener, 'Ex-figures, the sections of the line seem not to be continuous. (See Fig. 24.) Both illu-pt. i, P. 160.) sions can be referred to the overestimation of small angles. A more complicated figure, that may be explained as due to the over-estimation of small angles or more directly as a misapplication of a perspective interpretation, is the Hering figure (Fig. 25). ure, In this figthe oblique Fig. 24.--Poggendorff illusion. (From Titchener, lines are taken to op. cit., p. 165.) represent parallel lines converging toward a vanishing point; and as straight lines drawn on such surfaces would represent curved Fig. 25.--Hering figure. (From Titchencr, op. cit., p. 161.) lines, the parallel lines are assumed to diverge in the middle. Both can be explained also as the result of overestimation of small angles. In all of these cases, the figure has been closely associated with the wrong interpretation, and the interpretation replaces the actual Fig. 26.--MUller-Lyer illusion. (From Titchener, op. cit., p. 139.) figure. Other illusions are apparently due to a com-paiison of parts of the...show more

Product details

  • Paperback | 94 pages
  • 189 x 246 x 5mm | 181g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236672305
  • 9781236672308