Abstract
In the correction effect paradigm, the apparent straight-ahead is judged, under prismatic viewing, in both an illuminated and a darkened room condition. The correction effect occurs to the extent that the straight-ahead is judged more veridically in the illuminated than in the darkened room. In the present experiment, equivalent correction effects were obtained using prism magnitudes from 10 to 30 D. Further, correction effects were not obtained when the straight-ahead was measured with a pointing response rather than by the use of a visual positioning task. The implications of these data for explanations of the correction effect that have been presented in the literature are discussed.
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This research was supported by Grant MH-20504 from NIMH to the first author.
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Melamed, L.E., Beckett, P.A. & Wallace, B. The effect of prism strength and response mode on the magnitude of the correction effect in prism viewing. Perception & Psychophysics 23, 176–180 (1978). https://doi.org/10.3758/BF03208299
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DOI: https://doi.org/10.3758/BF03208299