Economics 1st Edition by Dean Karlan,Jonathan Morduch

Exercise 26

Which of the following situations are likely to involve adverse selection? a. After receiving an emergency call during class, a professor leaves students unsupervised for the rest of the period.
B) A course has a reputation for being an easy A, even though after the term begins, students realize that it isn't.
C) A course is a requirement for physics majors but an elective for biology majors.