It is the raw material from which personality is formed. Differences in temperament are apparent from birth onward. Relatively permanent and enduring patterns of behavior that a person displays in most situations. Lasting qualities within a person that are inferred from observed behavior. Often use traits to predict future behavior from past behavior.
Traits also imply some consistency in behavior.
How much have the personality traits of your friends changed in past five years. Categories used to describe personality, with each category representing a collection of related traits. Represents a category of individuals who have a number of traits or characteristics in common. Types are used by psychologists as shorthand way of labeling people who share similar personality traits. Shy, self-centered person.