Abstract
Gamma movement was investigated under six brightness levels. Comparison circles equal to, and slightly smaller than, the standard were judged “larger” significantly more often than chance. Brightness level did not affect this phenomenon; the effect was more pronounced during the first series and when comparison figures were on the right.
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The authors express appreciation to Joseph Conerton, and Robert Bice of Bordentown High School and to Zev Hymowitz, of the Trenton Jewish Community Center, for their aid and cooperation. The authors also thank Peter L. Carlton, Sydell T. Carlton, Herbert Gerjuoy, David L. Hoats and Herman H. Spitz for their critical reading of the manuscript.
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Winters, J.J., Gerjuoy, I.R. Gamma movement: Field brightness, series, and side of the standard. Psychon Sci 2, 273–274 (1965). https://doi.org/10.3758/BF03343447
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DOI: https://doi.org/10.3758/BF03343447