RT Journal Article SR Electronic T1 Asperger’s and Related Disorders JF Practical Neurology JO Pract Neurol FD BMJ Publishing Group Ltd SP 150 OP 159 DO 10.1046/j.1474-7766.2003.04144.x VO 3 IS 3 A1 Ronald B. David A1 Candace H. David A1 Lisa S. Riley YR 2003 UL http://pn.bmj.com/content/3/3/150.abstract AB Ants, bees, non-human primates and many other animals live in societies. Clearly, from an evolutionary view point, social competence must have a neurobiological basis, of course altered by social interaction. We are all neurobiologically scripted for intuitive social interaction and are inherently social creatures. But, as expected, social competence, like any other neurocognitive function, must be a variable falling along a continuum. There are bound to be outliers. In this review we will describe three types of outlier: Asperger’s syndrome will be contrasted with two similar disorders, high functioning autism and non-verbal learning disability. HISTORY Leo Kanner (1943) and Hans Asperger (1944), amidst a world war and a continent apart, independently described children who can best be described generically as having a ‘disorder of intuitive social competence’. The autistic children described by Kanner were generally lower functioning. Asperger’s (1944) paper was written in German and, until cited by Lorna Wing