Think thru the issues in a language in which you are competent but not fluent.
The tendency to take risky, irrational bets to avoid losses nearly disappeared for those tested the foreign language …
Mr Kahneman … posits two general systems of thinking: System 1, intuitive and quick, good for most purposes, but prone to those pesky cognitive traps; and System 2, deliberative and slow, better at higher reasoning but effortful to activate and keep active. The brain, which minimises effort where it can, leans on System 1 wherever possible. But modern life presents many problems better suited to System 2.
The hypothesis behind the “foreign-language effect” is that speaking the foreign language activates System 2 in advance of tackling the tricky questions … Another possible result might have been that using the foreign language tires the brain, and that this fatigue might make people more, not less, prone to mistakes. Mr Kahneman, after all, describes “ego depletion” leading to bad choices in other studies. But in this study, the effect of priming System 2 appears to have been stronger than any fatigue effect.