Final answer:
The trait approach to personality provides a method for identifying stable characteristics and ways of behaving that make up our personalities.
Step-by-step explanation:
A primary advantage of a trait approach to personality is that it provides a method for identifying and understanding stable characteristics and ways of behaving that make up our personalities. Trait theorists believe that personality can be understood by identifying the traits or characteristic ways of behaving that all people have. For example, the Five Factor Model, also known as the Big Five, identifies five dimensions of personality: openness, conscientiousness, extraversion, agreeableness, and neuroticism. These traits are relatively stable over the lifespan and provide a framework for understanding individual differences in personality.