Abnormal Pyschology Deviant

Pyschology is the study of human thoughts, behavior, and feelings. However, abnormal pyschology is the study of abnormal thoughts, feelings, and behaviors, and it deviates from what is expected and normal. it is true that we all have an experience with people who behave differently than us, and it is often said we live in a narcissistic culture. For example, imagine you are in a class and somebody stands up and starts yelling at you even though there are no reasons. Do you still agree this is a normal behavior? I believe that this is an abnormal behavior that goes against what is considered normal by society. Even when I call my family by their name on purpose, they think I am behaving abnormal. Therefore, as a society, we all always except
For example, what is deviant to Turkey is not deviant to US. it is considered to deviant to mark the body with tattoos in Turkey, but not in America and each has its problems. In addition to that, one day, I was having a dinner with my friends at a restaurant, and somebody suddenly came to our table and he said to my friend, “Where is my wife. She was with you. Find my wife”. First, I thought he was making a joke. However, his face expression was so serious, and my friend was so scared that she could not say anything; thus, she started crying. He started yelling at her in front of people in a restaurant because she was not able to defend herself. We decided to leave while the manager was talking to him. However, it is still the worst experience we have had so far. What would anyone do that? I believe that his behavior is classified as abnormal because it violates the rules what is excepted or acceptable behavior in a social group. He might be depressed, or he might have a problem with his wife, and this can cause him to behave like that. He could not control himself; therefore, he may be suffering from brain damage. In addition to that, what he did to my friend made us feel threatened and