As evidence for an hypothesis that pupil size plays an important role in nonverbal communication, Hess (1975) has reported that adults draw in appropriately sized pupils on his happy and angry faces task. However, he did not report a statistical test of his data. In this study, we replicated Hess' research and found congruent with his hypothesis that college students (n = 223) draw in significantly larger pupils on the happy face.
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References
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HessE. H.The role of pupil size in communication. Scientific American, 1975, 233, 110–119.
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HessE. H.GoodwinE.The present state of pupillometrics. In JanisseM. P. (Ed.), Pupillary dynamics and behavior. New York: Plenum, 1974. Pp. 209–248.
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JanisseM. P.Pupillometry: The psychology of the pupillary response. Washington, D. C: Hemisphere, 1977.
