Cognition refers to mental processes of acquiring knowledge and understanding through experience and senses. The cognitive framework in organizational behavior consists of personality, satisfaction models, and attrition models. Personality is determined by heredity, environment, and situations. It is the sum of ways a person reacts to and interacts with others, often described in terms of measurable traits. Heredity determines physical and biological characteristics at birth, while culture and social groups influence personality through environmental conditioning. Situations can also impact how personality traits are exhibited. Common personality traits studied include aggression, ambition, and loyalty.