Actors Ellen Pompeo, Sandra Oh, Katherine Heigl, Justin Chambers, and T.R. Knight reprised their roles as surgical interns Meredith Grey, Cristina Yang, Izzie Stevens, Alex Karev, and George O'Malley, respectively, continuing their expansive storylines as focal points throughout the season.
From Wikipedia, the free encyclopedia. In psychology, trait theory (also called dispositional theory) is an approach to the study of human personality. Trait theorists are primarily interested in the measurement of traits, which can be defined as habitual patterns of behavior, thought, and emotion.n some theories and systems, traits are something a person either has or does not have, but in many others traits are dimensions such as extraversion vs. introversion, with each person rating somewhere along this spectrum.
Trait Theory of Leadership is based on the assumption that people are born with inherited traits and some traits are particularly suited to leadership. People who make effective leaders have the right (or sufficient) combination of traits and great leaders has some common personality characteristics.he combination and interaction of various traits forms a personality that is unique to each individual. Trait theory is focused on identifying and measuring these individual personality characteristics known as Traits.