Role-Playing

A facet of the Immersion component:

Players who score high on Role-Playing enjoy being immersed in a story through the eyes of a character that they designed. These players typically take time to read or understand the back-story of the world as well as taking time to create a history and story for their characters. Also, they enjoy role-playing their characters as a way of integrating their character into the larger ongoing story of the world.

(Source: Nick Yee, Motivations of Play in MMORPGs)