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Bilingualism: The foreign language effect does not extend to rational decision making

Curley, Lee; Carruthers, Lindsey; Piotrowska, Barbara


Lee Curley


This research investigated if the foreign language effect extended to rationality. Four groups (English speaking monolingual group; Polish speaking monolingual group; Bilingual Polish group who were presented with decision task in English; Bilingual Polish group who were presented with decision task in Polish) completed a series of decision scenarios. The results highlighted that: 1) bilingual individuals did not display more rationality in general (or in specific decision scenarios); 2) the presentation of a decision in a non-native language did not aid rational decision making in bilinguals. The paper suggests that the foreign language effect may not increase the chances of bilingual individuals being more rational decision makers in general, but may promote more rational behaviour in specific decision contexts.

Journal Article Type Article
Acceptance Date May 14, 2020
Publication Date 2020-07
Deposit Date May 19, 2020
Journal Journal of Articles in Support of the Null Hypothesis
Publisher Reysen Group
Peer Reviewed Peer Reviewed
Volume 17
Issue 1
Keywords rationality; the foreign language effect; bilingualism; decision science; cognition.
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