The Mackworth Clock Test: a computerized version
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Updated: Oct 17, 2026
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Published on: August 28, 2021
K L Lichstein1, B W Riedel, S L Richman
1Department of Psychology, The University of Memphis, TN 38152-6400, USA. lichstein@mail.psyc.memphis.edu
Abstract:
The Mackworth Clock Test (MCT; N. H. Mackworth, 1948) was developed to evaluate vigilance in British Air Force radar technicians during World War II. Homemade versions of the MCT have since varied with respect to both the characteristics of the device and the procedures of its administration. This article is a report on a computerized version of the MCT developed by the authors to closely emulate Mackworth's test. MCT data were collected from 25 undergraduate students; their performance was found to be equivalent to Mackworth's participants' data. This is the first MCT version that has been validated against the original.
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