Why do we immediately assume that that's "impressive" and not "telling"? Isn't that assumption plain old American/Western exceptionalism?
Perhaps the hypotheses should be "maybe there is something in Nigerian/pre-industrial culture that allows children to thrive more than in American/industrialized culture"?
Perhaps the hypotheses should be "maybe there is something in Nigerian/pre-industrial culture that allows children to thrive more than in American/industrialized culture"?