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Purpose and research question: This review investigates the influence of the foreign language effect (FLE) on moral decision-making, risk aversion, and causality perception. Recent research indicates that bilinguals employ different decision-making strategies according to the language in use (first vs. second language). Methodology: Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) protocol, we conducted a comprehensive literature review. Our analysis focused on empirical studies, yielding 28 articles that met our inclusion criteria. Findings and conclusions: Our findings reveal that participants, when operating in a foreign language context, are more inclined to accept harm for improved outcomes, exhibit reduced risk aversion, and display moderated causal perceptions, particularly in emotionally charged contexts. The variability in study conclusions can be attributed to factors such as age, personality, language proficiency, and linguistic characteristics. Significance: Our results support previous findings in the FLE, highlight limitations, and provide suggestions for future research. [ABSTRACT FROM AUTHOR]

Previous research has shown that bilingual speakers may be more tolerant to ambiguity, they might perceive situations of ambiguity more interesting, challenging and desirable (e.g., Dewaele & Li, 2013). To our knowledge, no data are available addressing the question whether the language in use can have an effect on the personality trait of tolerance of ambiguity (ToA). This study investigated whether and how reading statements in a second language (L2), as opposed to the native language (L1), affects ToA. 387 Italian–English bilingual adults completed a questionnaire measuring levels of ToA either in English or Italian. Results revealed that processing information in L2 promoted higher scores of ToA overall and in sentences that were related to challenging perspectives and change. Age, gender and L2 proficiency were significant predictors of higher ToA scores. This study offers new evidence that processing information in a L2 can affect tolerance of ambiguous situations. [ABSTRACT FROM AUTHOR]