@mathewi That’s much too small of a sample size to reach that conclusion. At the very least, someone should seek replication with different language pairs, and especially seek the rarer cases of people whose ancestry is from one part of the world but who grew up speaking a language typical of another part of the world. (I speak, in varying degrees, more than ten different languages, and have lived outside the United States for years at a time. My children are native speakers of languages from more than one language family. The strong version of the Sapir-Whorf hypothesis, the conclusion of that small-n study, is what motivated my study of so many languages and my study of so many languages is why I no longer believe the strong version of the Sapir-Whorf hypothesis.)