N. H. Mackworth (1948)
Quarterly Journal of Experimental Psychology, 1(1), 6-21.
DOI: https://doi.org/10.1080/17470214808416738
Abstract. Mackworth's clock test: operators watching a pointer for infrequent double jumps show a marked decline in detection rate within 30 minutes. The founding study of the vigilance decrement, with direct implications for monitoring-task design.
Tags: vigilance attention foundational