True. In their Baltimore Study, Costa and McCrae found relative stability in the big five factors of personality across adulthood; however, recent studies have found greater variability over the course of the life span.
Extraversion , agreeableness, openness, conscientiousness, and neuroticism are the Big Five personality traits. Thus every trait symbolizes a location on a continuum. Individual people can fall any place on the trait spectrum. The Big Five remain fairly constant for the majority of a person's life.
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