Perceptual and cognitive factors in the apparent transparency phenomenon
(1983) Bulletin de la Classe des sciences — Vol. 69, n° 10, p. 475-494 (1983)
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- Abstract
- The apparent transparency phenomenon, which is partly linked with cases of figural completion, can be obtained experimentally in well-defined spatio-temporal conditions, when a surface in motion passes behind another physically opaque and homogeneous surface under achromatic illumination. Apparent transparency being poorly coercive in naive observers and requiring a certain degree of cognitive preparation, three series of experiments were devised in order to determine the respective influence of perceptual centration, of verbal information and of repetition on the frequencies of responses reporting the effect. Two pilot experiments allowed the authors to elaborate a response procedure fitting the requirements of perceptual centration without any cognitive interplay of the experimenter. The three experiments proper show the primordial role played by verbal information in this kind of perceptions. Apparent transparency is much less coercive than a comparable case of physical transparency, even when language is used during the experiment. This relatively low Pragnanz of the phenomenon is interpreted in terms of selective attention and of errors in the encoding and in the memory storage of phenomenal data. These two latter factors bring the observers to shift to the Tunnel effect which is more coercive and closer to ordinary perceptual experience.
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Hambrouck, M., & Thines, G. (1983). Perceptual and cognitive factors in the apparent transparency phenomenon. Bulletin de la Classe des sciences, 69(10), 475-494. https://hdl.handle.net/2078.5/53780 (Original work published 1983)