sentences:  Through personal anecdotes and original research, Doepke and Zilibotti show that in countries with increasing economic inequality, such as the United States, parents push harder to ensure their children have a path to security and success.Economics has transformed the hands-off parenting of the 1960s and '70s into a frantic, overscheduled activity.Growing inequality has also resulted in an increasing "parenting gap" between richer and poorer families, raising the disturbing prospect of diminished social mobility and fewer opportunities for children from disadvantaged backgrounds.