1. What is the mission of the field of personality psychology?

The mission of the field of personality psychology are the following.

Explanation:

Personality psychology enables us to see the many qualities we share in common with others, as well as the differences among us that serve to provide us with the distinctive features of our mental lives.An individual's personality is the combination of traits and patterns that influence their behavior, thought, motivation, and emotion. It drives individuals to consistently think, feel, and behave in specific ways; in essence, it is what makes each individual unique.Personality concerns the most important, most noticeable, parts of an individual's psychological life. Personality concerns whether a person is happy or sad, energetic or apathetic, smart or dull. Over the years, many different definitions have been proposed for personality. Most of the definitions refer to a mental system—a collection of psychological parts including motives, emotions, and thoughts. "Personality is the entire mental organization of a human being at any stage of his development. It embraces every phase of human character: intellect, temperament, skill, morality, and every attitude that has been built up in the course of one's life."Personality is the essence of a human being." "An individual's pattern of psychological processes arising from motives, feelings, thoughts, and other major areas of psychological function. Personality is expressed through its influences on the body, in conscious mental life, and through the individual's social behavior."

The mission, or the need, of the field of personality psychology, is to understand what determines an individual behavior, how an individual would behave in given circumstances, and also in knowing the differences between individuals or groups.

Explanation:

The personality of a person is the combination of his behavior, thinking pattern, emotional exhibits, and his likes and dislikes.It tries to study the individual in context to his background which includes his social-cultural influences, his childhood experiences and his environmental influences.It also studies the differences between individuals, group’s people and their approaches to life situations.It guides a psychologist to foresee how and why would a person or a group of people may or may not behave in a particular way towards a particular situation.

Hence, this is the mission or the importance of personality psychology.

That is super long dude