Asperger’s syndrome is characterised by subtle impairments in three areas of development: social communication, social interaction and social imagination. There is no clinically significant delay in cognitive development or in language acquisition. However, students with Asperger’s syndrome have communication difficulties and may speak in a monotonous or exaggerated tone and at great length about a topic that is of particular interest to them irrespective of the reaction of the listener. Students find it difficult to interpret social signals and interact with others. They often excel at memorising facts and figures.