He tries the line on the fresh girl who sits next to him in science. She dismisses him, wrinkling her nose. He tries to gauge their compatibility, as well as her approachability.
Temperament is each person's first and most natural way of responding to the world.
It can offer an understanding of the personal characteristics and inborn behavior styles of just about everyone. For instance, Jessica's parents can stop worrying about her shyness. The key is to understand how and when she acts shy, and how that behavior can become a positive aspect of her life. Being timid is a good trait for a girl meeting a stranger on the playground, but it may not garner an A-plus in a classroom discussion. Or, picture a little boy with an abundance of energy, so much energy that he jumps on the couch, runs around the dinner table, and throws his toys.