Answer:
sadists instincts
masochists instincts
Explanation:
In psychology, the term sadists refers to persons who receives pleasure by inflicting pain to others (most of the time in a sexual way). The opposite of a sadist is a masochist, who is a person who receives pleasure by being in pain (also in a sexual way most of the time).
Therefore, we can say that those with sadists instincts are individuals who receive a sexual thrill from inflicting pain on others, and people with masochists instincts are individuals who receive a sexual thrill from receiving physical pain.
