Acknowledgments

The style I adopted in this book has been inspired by my co-teachers and dear friends at Cambridge Tim Croudace, Jon Heron, Jan Boehnke and Jan Stochl, and perfected over the years thanks to feedback from my students at Cambridge and Kent, and Graduate Teaching Assistants at Kent (most notably Hirotaka Imada, Bjarki Gronfeldt Gunnarsson, Daqing Liu, Chole Bates and Rebecca McNeill). I am very grateful to all of them.

Data used in this book are either open access from articles, R packages or other software resources (sources are always acknowledged), or were shared with me by colleagues and collaborators, or are from research projects I have been involved in during my time at SHL, Anna Freud Centre, University of Cambridge and University of Kent. I tried my best to acknowledge all sources appropriately; however, please let me know if you spot any omissions.

Unless acknowledged within chapters, all contents are my own. I did not have any assistance in writing this book, if anything, many people have tried to stop me from finishing it by loading me with other work and commitments. I thank them for helping to build my character.

After the book was first published online, my ex-SHL colleague Martin Harris kindly volunteered to work through the exercises and let me know of any typos, errors or formatting issues. In this edition, I have implemented all his editorial suggestions, for which I am very grateful.