Would you make the same decisions in a foreign language as you would in your native tongue? It may be intuitive that people would make the same choices regardless of the language they are using, or that the difficulty of using a foreign language would make decisions less systematic. We discovered, however, that the opposite is true: Using a foreign language reduces decision-making biases.
The foreign-language effect on decision making is most likely determined by multiple factors that increase psychological distance and promote deliberation. Perhaps the most impor- tant mechanism for our effect is the reduction in emotional resonance that is associated with using a foreign language. Emotions and affect play an important role in decision making and in considerations of risk […]. An emotional reaction sometimes induces a less systematic decision. Making a decision in a foreign language could reduce the emotional reaction, thereby reducing bias. […]
So I guess it’s a good thing that recently I found myself thinking in English more and more often.