Answer:
antisocial personality disorder
Step-by-step explanation:
Individuals reflecting the symptoms of antisocial personality disorder are also sometimes said to be sociopaths. It is the condition where the person reflects no regard and gratitude for the rights of the other people. Such people ignore and manipulate the feelings of other people. They are of the view that their negative behavior towards other people does not are correct. Their negative behavior is of no guilt for them. They do not have any regard to follow the law and rules. In the given case, John's behavior is typical of possessing antisocial personality disorder. He has shown a negative attitude towards older people but has no regard for them. He does not consider his negative attitude and does not have any remorse for it.