The idea of a fixed mindset, in which people are smart or not smart, stands in contrast to a growth mindset, in which people become intelligent and knowledgeable through practice. In her 2006 book The New Psychology of Success, psychologist Carol Dweck described the two: People with growth mindsets believe that the harder they work, the smarter they get. And the subtleties of the ways in which we praise kids are related to the mindsets those kids develop.
The group most damaged by fixed-mindset thinking is high-achieving girls, [professor of mathematics education at Stanford University Jo] Boaler argues, because it’s girls who are told by society that they probably won’t be as good as boys at math and science. That means girls are only more likely to avoid challenging themselves in science and math, and that aversion to making mistakes leads to less learning and progress. The more that certain disciplines cling to ideas of giftedness, the fewer female Ph.D.s there are in those fields.