Five years ago, Dweck did a study at the University of Hong Kong, where all classes are conducted in English. She and her colleagues approached a large group of social-sciences students, told them their English-proficiency scores, and asked them if they wanted to take a course to improve their language skills. One would expect all those who scored poorly to sign up for the remedial course. The University of Hong Kong is a demanding institution, and it is hard to do well in the social sciences without strong English skills. Curiously, however, only the ones who believed in malleable intelligence expressed interest in the class. The students who believed that their intelligence was a fixed trait were so concerned about appearing to be deficient that they preferred to stay home. “Students who hold a fixed view of their intelligence care so much about looking smart that they act dumb,” Dweck writes, “for what could be dumber than giving up a chance to learn something that is essential for your own success?”