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Blinking While Speaking and Talking, Hearing, and Listening: Communication or Individual Underlying Process?

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Abstract

Why do eye-blinks activate during conversation? We manipulated informational content and communicative intent exchanged within dyads. By comparison to a silent situation, both emitters and receivers increased their blink rate when the former delivered a treasure hunt route to the latter. When the previously known route was repeated, or when the alphabet was reeled off within the same dyads, the receiver did not increase the rate, although the emitter did. The emitter’s rate increased as well when formulating the route not vocally but silently in an inner voice; none reacted when the emitter was really silent. Therefore, the high rates of spontaneous blinking commonly observed during a conversation can be explained outside of a bilateral communication function. It seems primarily related to individual cognitive processing of afferent or efferent information. The speaker blinks when handling the speech; the listener blinks only when taking heed of useful content.

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Notes

  1. We also conducted robustness checks to assess whether the same conclusions would follow if we customized the JZS prior’s width to r = .20, assuming a small rather than a medium median effect size (see (Świątkowski & Carrier, 2020). We obtained the following BF values: 1) BF01 = 2.05; 2) BF01 = 2.07; 3) BF01 = 1.53. Such BF values provide only anecdotical evidence, yet they still indicate that the data were more likely assuming H0 was true than if H1 was true.

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Acknowledgements

The authors would like to thank warmly Camille Martinie, Clotilde Lobjois, Ines Tomasik and Maël Lemouzy for voluntarily dedicating a significant number of hours to data collection and analysis.

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  1. CNRS, LPNC, Univ. Grenoble Alpes, 38000, Grenoble, France

    Emmanuel Descroix & Christian Graff

  2. Department of Social Psychology UNILaPS, University of Lausanne, Lausanne, Switzerland

    Wojciech Świątkowski

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Descroix, E., Świątkowski, W. & Graff, C. Blinking While Speaking and Talking, Hearing, and Listening: Communication or Individual Underlying Process?. J Nonverbal Behav 46, 19–44 (2022). https://doi.org/10.1007/s10919-021-00387-x

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