is the process of unlearning old ways of doing things and adopting new attitudes, values, norms, and behavior.

resocialization

Explanation:

re-socialization is concept in sociology which refer to removing of old norms, traditions and feed or prepare mind to accept and learn new traditions, values and culture. Simple example can be explained through process of changing work environment or shifting from one country to another , when someone move from one country to another he or she have to learn new language , culture, dressing and traditions. And other example used to understand this concept is prisoner when he or she is moving in or moving out from prison,  has to change his behavior and attitude.

can you give more details

answer; when one group has an extremely high score at pretest;