Bold and outgoing or shy and retiring -- while many people can shift from one to the other as circumstances warrant, in general they lean toward one disposition or the other. And that inclination changes little over the course of their lives.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/Q...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/Q...