Elliott divided her class by eye color — those with blue eyes and those with brown. On the first day, the blue-eyed children were told they were smarter, nicer, neater, and better than those with brown eyes.
Throughout the day, Elliott praised them and allowed them privileges such as a taking a longer recess and being first in the lunch line. In contrast, the brown-eyed children had to wear collars around their necks and their behavior and performance were criticized and ridiculed by Elliott.
On the second day, the roles were reversed and the blue-eyed children were made to feel inferior while the brown eyes were designated the dominant group. What happened over the course of the unique two-day exercise astonished both students and teacher.
On both days, children who were designated as inferior took on the look and behavior of genuinely inferior students, performing poorly on tests and other work. About one hour.