Context-dependent similarity effects in letter recognition

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Abstract

In visual word recognition tasks, digit primes that are visually similar to letter string targets (e.g., 4/A, 8/B) are known to facilitate letter identification relative to visually dissimilar digits (e.g., 6/A, 7/B); in contrast, with letter primes, visual similarity effects have been elusive. In the present study we show that the visual similarity effect with letter primes can be made to come and go, depending on whether it is necessary to discriminate between visually similar letters. The results support a Bayesian view which regards letter recognition not as a passive activation process driven by the fixed stimulus properties, but as a dynamic evidence accumulation process for a decision that is guided by the task context.

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Kinoshita, S., Robidoux, S., Guilbert, D., & Norris, D. (2015). Context-dependent similarity effects in letter recognition. Psychonomic Bulletin and Review, 22(5), 1458–1464. https://doi.org/10.3758/s13423-015-0826-3

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