Deciphering CAPTCHAs: what a Turing test reveals about human cognition.

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ID: 93514
2012
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Abstract
Turning Turing's logic on its head, we used widespread letter-based Turing Tests found on the internet (CAPTCHAs) to shed light on human cognition. We examined the basis of the human ability to solve CAPTCHAs, where machines fail. We asked whether this is due to our use of slow-acting inferential processes that would not be available to machines, or whether fast-acting automatic orthographic processing in humans has superior robustness to shape variations. A masked priming lexical decision experiment revealed efficient processing of CAPTCHA words in conditions that rule out the use of slow inferential processing. This shows that the human superiority in solving CAPTCHAs builds on a high degree of invariance to location and continuous transforms, which is achieved during the very early stages of visual word recognition in skilled readers.
Reference Key
hannagan2012decipheringplos Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Hannagan, Thomas;Ktori, Maria;Chanceaux, Myriam;Grainger, Jonathan;
Journal PloS one
Year 2012
DOI
DOI not found
URL
http://europepmc.org/articles/PMC3291547?pdf=render
Keywords
Medicine Science communication. mass media

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