How does John mature throughout The Pigman?

When
we are first introduced to John, he thinks very little of how his actions might have
consequences. He considers himself a bit of a "bad boy" with a devil-may-care
attitude. In general, he has a serious problem with authority. It's why he sets off firecrackers
at school and does his ridiculously stupid fruit roll prank. I really believe that John is the
way that he is because he figures nobody cares about him. If nobody cares about him, John
figures he shouldn't care about how his actions affect the lives of other people. Lorraine and
the Pigman are what cause John to start changing. Through those two characters, John learns what
it feels like to be loved and respected by a peer and an adult. Unfortunately, that isn't
enough. John has to see the hurt he causes in the Pigman due to the party in order for John's
heart and personality to really begin changing. Readers only get a very brief glimpse into
John's drastic change, but we do finish the book believing...