Abstract
This experiment studied the effects of direction of bracket, height of bracket, and attachment or interspace on the apparent length of a line with bracket attachments. Results showed that outward brackets produced longer lines than inward brackets, interspacing produced longer lines, and increasing height of the brackets produced convergence of inward and outward functions. These results were considered partial support for the application of Day’s general constancy explanation to the brackets illusion.
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References
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This study was completed while the first author was a visitor at the Center for Human Information Processing at the University of California. San Diego. Support came from NIMH Grant MH-15828 to the Center. The authors are grateful to John Clavadetscher, Cheryl Graesser, John Harris, and Al Stevens for assistance in data collection.
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Stanley, G., Graesser, A.C. Constancy scaling and the brackets illusion. Bull. Psychon. Soc. 2, 198–200 (1973). https://doi.org/10.3758/BF03329243
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DOI: https://doi.org/10.3758/BF03329243