Advertisement

Measuring the Ponzo illusion with the method of production

  • Alexander W. Pressey
Instrumentation & Techniques

Abstract

The Ponzo illusion was varied as a function of angle of oblique arms and was measured by the method of production. The results showed that the method of production produced very similar results to those obtained by the method of limits. The data also indicated that relatively stable individual scores could be obtained if about six judgments were required and if the targets elicited a large illusion. It was concluded that the method of production should be given serious consideration when choosing a psychophysical method.

Keywords

Control Target Oblique Line Standard Line Poggendorff Illusion Psychophysical Method 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Bayer, C, A., & Pressey, A. W. Geometric illusions as a function of pigmentation of the fundus occuli and target size. Psychonomic Science, 1972, 26, 77–79.Google Scholar
  2. Coren, S., & Girgus, J. S. A comparison of five methods of illtusion measurement. Behavior Research Methods & Instrumentation, 1972. 4, 240–244.Google Scholar
  3. Hill, A. L. Poggendorff illusion: Effects of intelligence, viewing distance, and space between vertical lines. Psychonomic Science, 1971, 25, 71–72.Google Scholar
  4. Howard, R. B., Wagner, M., & Mills, R. C. The superiority of the pair-comparisons method for scaling visual illusions. Perception & Psychophysics, 1973, 13, 507–512.Google Scholar
  5. Pressey, A. W., & Bross, M. Assimilation theory and the reversed Müller-Lyer illusion. Perception, 1973, 2, 211–217.CrossRefGoogle Scholar
  6. Pressey, A. W., Butehard, N., & Scrivner, L. Assimilation theory and the Ponzo illusion: Quantitative predictions. Canadian Journal of Psychology, 1971, 25, 486–497.PubMedGoogle Scholar
  7. Pressey, A. W., & Dewar, M. J. A reversed Poggendorff illusion. Psychonomic Science, 1970, 20, 227–228.Google Scholar
  8. Pressey, A. W., & Sweeney, 6. A variation of the Poggendorff illusion. Perceptual & Motor Skills. 1969, 28, 883–886.Google Scholar
  9. Pressey, A. W.. & Sweeney, O. Some puzzling results on the Poggendorff illusion. Perception & Psychophysics, 1972, 12. 433–437.Google Scholar
  10. Velinsky, S. Explication physiologique de l’illusion de Poggendorff. Année Psychologique, 1925. 26, 107–116.CrossRefGoogle Scholar

Copyright information

© Psychonomic Society, Inc. 1974

Authors and Affiliations

  • Alexander W. Pressey
    • 1
  1. 1.Department of PsychologyUniversity of ManitobaWinnipegCanada

Personalised recommendations