Dr. David Pearson is a consultant clinical psychologist specializing in child and adolescence services, based in the UK. He has had a life-long career in National Health Service hospitals, both providing and managing services. Alongside his clinical role, Dr. Pearson has maintained an enthusiastic interest in research, publishing in a wide range of international journals covering areas such as child hallucinations, hyperactivity and developmental issues.Together with Dr Fiona Kennedy, David has edited a mental health textbook which was published by Routledge in a number of countries.