Article

The effect of curved- and straight-line figures on apparent movement and apparent depth during rotation

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Abstract

The relative influence of straight- vs curved-line figures on two aspects of the stereokinetic phenomenon were examined: apparent depth and apparent sliding of one figure part over another. Thirty Ss compared three stimulus patterns (two circles; circle and triangle; and two triangles) in successive counterbalanced pairs for a total of 18 judgments per S. Tlie prediction that the two circles would yield the strongest effect, two triangles the least effect, and the circle and triangle a medium effect was strongly supported for both depth and sliding effects. The implication of these findings for pattern discrimination tasks was noted.

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