People who live in societies with wide gaps between the wealthy and everyone else turn out to live briefer lives than people who call more equal societies home. People who live in more equal societies, meanwhile, tend to live happier lives than their unequal-society counterparts. They face less crime. Their economies crash less often. Recent studies from Northwestern's Maryam Kouchaki and her colleagues ... have been illuminating how unequal distributions of income and wealth are serving to increase "the acceptability of self-interested unethical behaviors." The bottom line: People who live in highly unequal societies feel "a lower sense of control" and look less askance at unethical behaviors, either from others or from themselves, than do people who live in distinctly more equal societies. "Overall," Kouchaki and her colleagues conclude, "our results suggest inequality changes ethical standards." Other recent psychological research has come to the same core conclusion. "When are people more open to cheating?" asked the Canadian researchers Anita Schmalor, Adrian Schroeder, and Steven Heine in a paper published earlier this year. "Economic inequality makes people expect more everyday unethical behavior." The longer we let inequality define our contemporary daily lives, this new research helps us understand, the more the unethical behavior all around us will seem to reflect just the way our world naturally works. Economic inequality, in effect, normalizes unethical behavior.