The determinants of personality are the factors that influence the development of personality, such as nature, or biological, and nurture, or environmental. Views differ on the key determinants of personality, and more contemporary theories point toward the possibility of situational and physical factors in addition to the traditional nature/nurture dialectic.
The situational theory of personality states that personality changes depending on circumstances and activities. A person will behave differently at work, for instance, than they will with their friends, and differently again when alone. The physical theory of personality suggests that genetic or biological factors, such as race, attractiveness and age, heavily influence personality development.