Alexis seems charming and vivacious when you first meet her, but you soon discover that she is extremely moody, jealous, and possessive; terrified of being alone; and prone to self-destructive behavior. This behavior is most likely to be diagnosed as a symptom of psychological disorder if it is:

preventing her from functioning effectively.

Explanation:

Psychology can be defined as the scientific study of both the consciousness and unconsciousness of the human mind such as feelings, emotions and thoughts, so as to understand how it functions and affect human behaviors in contextual terms.

This ultimately implies that, psychology focuses on studying behaviors and the mind that controls it.

In this scenario, the behavior is most likely to be diagnosed as a symptom of psychological disorder if it is preventing her from functioning effectively

competition i thin