After people first react to good or bad events, their feelings and reactions tend to dampen down over time and they return toward their original level of subjective well-being. This process is known as what concept

adaptation                    

Explanation:

Adaptation: In psychology, the term adaptation is described as the propensity of an organism to adapt or adjust within its environment. Through the adaptation process, human beings tend to match his or her original experiences and a few new experiences and hence these may not even fir together.

The concept of adaptation was proposed by one of the famous psychologist named Jean Piaget and is considered as one of the important parts in cognitive development.

In the question above, the given statement signifies the adaptation process.

answer; racism;