Psycho

According to wikipedia Personality is the particular combination of emotional, attitudinal, and behavioral response patterns of an individual. Personality commonly refers to:
Personality psychology, the theory and study of individual differences, traits, and types
Personality trait theory, attributes by which people may vary in relative terms
Personality may also be discussed in the context of:
Personality disorders, a class of mental disorders that is characterized by long-lasting rigid patterns of thought and actions
Personality pathology, characterized by adaptive inflexibility, vicious cycles of maladaptive behavior, and emotional instability under stress
Personality quiz or Personality test, a series of questions (usually multiple-choice, rating scale, or True/False) intended to describe aspects of an individual's character, thoughts, and feelings
Personality type, refers to patterns of relatively enduring characteristics of behavior that occur with sufficient frequency
Personality development, the concept that personality is affected by various sources
Personality genetics, a scientific field that examines the relation between personality and genetics
Personality systematics, interrelationships among subsystems of personality as they are embedded in the entire ecological system

Sociology
Cult of personality, political institution in which a leader uses mass media to create a larger-than-life public image
Personality rights, consisting of the right to individual publicity and privacy

Personality refers to individual differences in characteristic patterns of thinking, feeling and behaving. The study of personality focuses on two broad areas: One is understanding individual differences in particular personality characteristics, such as sociability or irritability. The other is understanding how the various parts of a person come together as a whole.
Adapted from the Encyclopedia of Psychology