Acknowledgements
I would like to thank the many students I have taught over the past 30 years, whose needs
have provided the impetus for this book. Their enthusiasm and resilience has been a constant
inspiration for me.
My wife Rene has provided me with invaluable support, encouragement and advice on many
aspects of academic writing during the development of this book. Final thanks are due to my
daughter, Sophie, for helping me to keep the whole subject in perspective!