Abstract
Autism and Asperger syndrome are psychiatric conditions diagnosed primarily on the basis of deficits and problems in social behaviour; interaction and communication. At present the explanation of these behavioural features is dominated by three cognitive models. However, it is a characteristic of each of these models that they only explain a sub-set of the overall features.The aim of this paper is to suggest an alternative conceptual theory of autism and Asperger syndrome that unites the current three models. Thus, the aim is to situate the existing models as special cases of the one being proposed here. This alternative conceptualisation draws heavily on distinctions and ideas present in the philosophy of science, most especially in the area of critical realism. Central to the theory is the idea that the core “problem” in autism and Asperger syndrome concerns ontological depth. More specifically, that people with these conditions find it difficult to cope with phenomena characterised by depth , open systems and high internal relationality