Income inequality has been on the rise in many countries. Is this bad? One way to decide is to look at the degree of change in incomes across generations (intergenerational mobility) and, more generally, at the extent to which income differences among individuals are traceable to their social...

Income inequality has been rising in many countries. Is this bad? One way to decide is to look at the change in incomes across generations (intergenerational mobility) and, more generally, at the extent to which income differences among individuals are traceable to their social origins....