What I loved about 'Summer' was that they were these four bright kids with a wonderful future. In a way she was the one with the brains and then you have the beauty queen and the jock and the introvert.

At the root of the shy temperament is a deep fear of social judgment one so severe it can sometimes be crippling. Introverted people don't worry unduly about whether they'll be found wanting they just find too much socializing exhausting and would prefer either to be alone or in the company of a select few people.