I know this is anecdotal, but I'm Armenian-American, and I've noticed my emotional reaction to certain events, such as road rage, or disagreement with a sibling, can be more sever when I speak or think in my native tongue, rather than expressing my feelings in English.

I don't necessarily believe my morality changes when I alternate between English and Armenian, but I do find it a lot easier to express my emotions in Armenian than with English, but when I process information in English I can actually pause and think before I speak, which can be more beneficial for situations where your words can do more harm than good.