A misleading test of the theory of perceptual vector analysis : some critical comments to Profitt, Cutting and Stier: "Perception of wheel-generated motions", this journal 1979, 5, 2, 289302.

A published paper on perceptual theory is criticized. The main theme of this paper is to investigate experimentally what the authors say is a fundamental statement in the theory of perceptual vector analysis as formulated by the author of this report. It is made clear that the conception of the theory of perceptual vector analysis is profoundly erroneous.