Perceiving, describing and modelling child developmentAutism is an essential concept used in the description of child development and its variances. Yet the phenomenal success of autism diagnoses is relatively recent. Today, autistic spectrum disorder is regarded as a developmental condition with genetic and biochemical correlates that often persists into adulthood. In 2009, the Autism Act became the first ever 'disability-specific' legislation to be passed in the UK, demonstrating the significance of the autism diagnosis to reframing approaches to mental health care, social welfare provision and individual rights in the UK. In 2013, EU Aims, a major initiative to develop new treatments for autism, received the largest grant for any mental health problem in the whole of Europe, revealing the cultural capital and potential for revenue generation held by the diagnosis. All major works in developmental psychology, educational psychology, child psychiatry, and now adult mental health, discuss autism and its implications. Teachers, social workers, health visitors, general practitioners and other front-line service providers receive training on the signs and management of autism. Parent groups, self-advocates and others campaign, publish, blog and broadcast on their experiences of autism and make sure that autism awareness is raised and remains so. The literary world has also woken up to the significance of autism, with, for example, Mark Haddon's Curious Incident of the Dog in the Night-Time (2003) part of a growing genre of autism fiction in the English language. Other media and artistic representations of autism also flourish in Britain and abroad. 1 This is perhaps not surprising given the increasing number of children and adults who receive the diagnosis, or indeed who self-identify with it.A 2009 study by Simon Baron-Cohen and colleagues claimed the UK