Simon Baron Cohen one of the leading researchers in autism suggests that individuals with autism have a drive to systemise i.e to analyse, explore and construct systems. This is the opposite to empathising which requires understanding other people’s emotions and thoughts which is difficult for individuals with autism. A study in the Journal of Autism and Developmental Disabilites reports a new therapy for children with autism based on this theory. In the study children with high functioning autism were given a intervention consisting of playing with lego in a group on a weekly basis. Lego was chosen as it is a systemising toy which children with autism would feel more comfortable with. Using Lego in the context of a social group with clear social rules seems to have been effective. The study reports improved social interaction scores and reduced maladative behaviour. I believe that Simon Baron Cohen’s theory makes a lot of sense and it is good to see the theory resulting in effective intervention. As Simon Baron Cohen has described in the past it is important to understand how children with autism process the world and then to help them to live with their condition.