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Journal Article The Measurement of Perceptual Load and Reserve Capacity Get access I.D. Brown I.D. Brown Medical Research Council, Applied Psychology Research UnitCambridge Search for other works by this author on: Oxford Academic PubMed Google Scholar Occupational Medicine, Volume 14, Issue 1, April 1964, Pages 44–49, https://doi.org/10.1093/occmed/14.1.44 Published: 01 April 1964
I D Brown (1964) studied this question.