Abstract
Four experiments on induced movement and induced stationariness are described. Experiments 1 and 2 showed that mere enclosure of a stationary spot in a moving frame does not necessarily result in induced movement. Nor does enclosure of a moving spot in a stationary frame necessarily result in perceived real movement of the spot. Duncker’s principles of enclosure is thus called into question. Two further experiments showed that both induced and perceived real movement of a spot are much more frequent when the frame is replaced by either two or more similar spots which enclose or flank the target spot. It can be concluded that the principle of enclosure obtains when the reference field consists of more than one element which move or remain stationary together. When such a field moves, it is the single, enclosed element which appears to move while the field itself appears stationary.
Article PDF
Similar content being viewed by others
References
Brosgole, L. An analysis of induced motion.Acta Psychologica, 1968,28, 1–44.
Brown, R. H., &Conkin, J. E. The lower threshold of visible movement as a function of exposure-time.American Journal of Psychology, 1954,67, 104–110.
Day, R. H. Induced visual movement as nonveridical resolution of displacement ambiguity.Perception & Psychophysics, 1978,23, 205–209.
Day, R. H., &Dickinson, R. G. Absence of color-selectivity in Duncker-type induced visual movement.Perception & Psychophysics, 1977,22, 313–320.
Duncker, K. Über induzierte Bewegung (Ein Beitrag zur Theorie optisch wahrgenommener Bewegung).Psychologische Forschung, 1929,12, 180–259.
Gogel, W. C. Independent motion induction in separated portions of the visual field.Bulletin of the Psychonomic Society, 1977,10, 408–410.
Kaufman, L.Sight and mind: An introduction to visual perception. New York: Oxford University Press, 1974.
Kinchla, R. A. Visual movement perception: A comparison absolute and relative movement discrimination.Perception & Psychophysics, 1971,9, 105–171.
Mack, A., Fisher, C. B., &Fendrich, R. A re-examination of two-point induced movement.Perception & Psychophysics, 1975,17, 273–276.
Rock, I.An introduction to perception. New York: Macmillan, 1975.
Wallach, H. The perception of motion.Scientific American, 1959,201, 56–60.
Winer, E. J.Statistical principles in experimental design (2nd ed.). New York: McGraw-Hill, 1962.
Author information
Authors and Affiliations
Additional information
The assistance of the Australian Research Grants Committee is gratefuly acknowledged.
Rights and permissions
About this article
Cite this article
Day, R.H., Millar, J. & Dickinson, R.G. Induced movement as nonveridical resolution of displacement ambiguity: Effect of enclosure and number of field elements. Perception & Psychophysics 25, 23–28 (1979). https://doi.org/10.3758/BF03206105
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.3758/BF03206105