Why does Sammy act the way he does?

I believe one of the reasons Sammy acts the way he does is because of where he lives. He lives in a fairly dodgy part of Liverpool. This may affect how he thinks and what he does. The people who live down his street may affect what he does and if they have a rough upbringing then that is what they will think is normal.

Another reason why is because he may not get much attention at home. This would be because he has many brothers and therefore will get less attention.

One more reason why is because he hasn't grow up with a fatherly figure. This means that he won't get told off as much as he should, meaning that he is able to continue to do bad things.