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Bilinguals’ emotions can vary in intensity with the language of a stimulus. Yet, extant research has somewhat surprisingly accepted inconsistent results from implicit nonverbal and explicit verbal emotion measures. To date, it is unclear if this inconsistency recurs to conceptual or methodological differences. We therefore investigated if squeezing a handheld dynamometer is a valid nonverbal, “visceral” alternative to self-reported language-dependent feelings by comparing explicit ratings to neuro-physiological emotional reactions. We replicated two pupillometry experiments inducing language-dependent emotions through sentence reading (Study 1) and listening to narrative video commercials (Study 2) of low and high emotionality in the first or second language. Pupillometry confirmed that bilinguals are more sensitive to the low-high emotionality contrast in their first than second language. Grip force (but not duration) mirrored these findings, whereas verbal ratings did not. We thus recommend grip force as a new attentional, nonverbal measure for bilingualism research.
