T H E T I M E H A S come for a manifesto arguing for the mutually beneficial merging of traditional 'general' child and adolescent mental health services (CAMHS), and more specialized mental health services for children and adolescents who have intellectual disability, under the rubric of 'developmental neuropsychiatry'. Actually, this time is long overdue and we should question why change has been so slow in coming. The arguments for this are persuasive and logical. On a personal level, I have long believed in a biopsychosocial approach to child and adolescent (or more properly developmental) psychiatry. The disciplines of learning disability psychiatry and child and adolescent psychiatry have much to learn from each other, have much in common goalwise, and can help address serious shortcomings in each of their traditional perspectives of conceptualization, evaluation and intervention by coming together. Having set out this stall, we need to ensure that we do not sell ourselves short by falling for benevolent and even sympathetic, but ultimately reactionary, resistant and defensive responses from establishment camps within mental health sciences and services. In my experience, arguments that young people with intellectual disability and mental health problems are young people first and foremost are often met with a benevolent, acquiescing and disdainful acknowledgement, along the lines of 'Of course we agree with your opinion, but they are different after all, aren't they?!' Or to put it even more offensively