Here is from a new research paper by Christina Starmans, Mark Sheskin, and Paul Bloom:
…despite appearances to the contrary, there is no evidence that people are bothered by economic inequality itself. Rather, they are bothered by something that is often confounded with inequality: economic unfairness. Drawing upon laboratory studies, cross-cultural research, and experiments with babies and young children, we argue that humans naturally favour fair distributions, not equal ones, and that when fairness and equality clash, people prefer fair inequality over unfair equality.
As I said in a talk at Harvard Business School a few days ago, “if you hear the word “inequality,” the chance that what follows will be wrong is at least 3/4.”
For the pointer I thank Michelle Dawson.