1986 volume 15(4) pages 399 – 403
doi:10.1068/p150399

Cite as:
Wilson J A, Robinson J O, Piggins D J, 1986, "Apparent height of a stereokinetic cone is decreased by departure from circularity" Perception 15(4) 399 – 403
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Apparent height of a stereokinetic cone is decreased by departure from circularity

John A Wilson, James O Robinson, David J Piggins

Received 15 December 1985, in revised form 25 August 1986

Abstract. Subjects made judgements of the comparative height of the stereokinetic cones seen for pairs of rotating figures with varying eccentricity and ellipticity. For any given eccentricity, ellipticity of the figure reduced the apparent height, with narrow ellipses seeming to be shallower. The effect is attributed to an interaction in constancy scaling.

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