ABSTRACT
Cast your mind back to your own teens. You might recall moments when it seemed that you or the world would never be quite the same again. Such a realization may have been associated with an ill-defined thrill or a dread-or, maybe, both at the same time. These changes may have centred about senses of physical changes and growth of your body, or your feelings about a girl or a boy of a similar age or a sense of change in how you were recognized and regarded by others important to you.
