they consistently found that the primary traits themselves came together in particular, meaningful groupings to form broader secondary or global traits, each with its own particular focus and function within personality (cattell & schuerger, 2003). for example, the first global trait they found was extraversion-introversion. it resulted from the natural affinity of five primary traits that defined different reasons for an individual to move toward versus away from other people (see below). they found that there was a natural tendency for these traits to go together in the real world, and to define an important domain of human behavior—social behavior. this global factor global extraversion/introversion (the tendency to move toward versus away from interaction with others) is composed from the following primary traits: