The answer to this question is Renewal
In the concept of classical conditioning, renewal refers to a situation when a conditioned behaviors return after extinction when a certain part of the environment is changed. This type of conditioning is the one that most likely causes an addict to relapse even after successfully following the recovery program
I believe the way people behave in pubic is more related to actors in a play. Because at many times people are not honest in public, have different behaviors than they present individually, and are easily influenced by other individuals and the environment.