Abstract
FOLLOWING the work of Hess1,2, and in parallel to other recent work3 where changes in the size of the pupil of human subjects' eyes were found during information processing tasks, a number of further findings are reported here. Variations in the level of arousal are presumed to be the intervening variable. A cinematographic technique for recording pupil size has been developed in which very high film emulsion speeds have been attained, in excess of 5,200 ASA from 650/800 ASA Ilford HPS 16 mm ciné film.
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References
Hess, E., Science, 143, 3611 (1964).
Hess, E., Sci. Amer., 212, 4 (1965).
Kahneman, D., and Beatty, J., Science, 154, 3756 (1966).
Berlyne, D. E., Craw, M., Salatapek, P. H., and Lewis, J. L., J. Psychol., 66, 6 (1963).
Berlyne, D. E., and McDonnel, P., Electro-enceph. Clin. Neurophysiol., 18, 2 (1965).
Wittenborn, J. R., Psychometrika, 8, 1 (1943).
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BRADSHAW, J. Pupil Size as a Measure of Arousal during Information Processing. Nature 216, 515–516 (1967). https://doi.org/10.1038/216515a0
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DOI: https://doi.org/10.1038/216515a0
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