This was a nice, easy-ready which gave me an insight into the process of observing children in a non-judgemental way. Arnold writes only about what is experienced, and this is done without letting biases or schema interfere.
I learnt a little about the development of children through this book, although I thought there could have been more of this. The book was very good at addressing the changes Harry went through, but did not often offer a cognitive explanation for these changes, which I would have liked.