It is recognised that autism results in substantial life-long disability. Severe emotional and behavioural problems are likely to be a key factor in precluding adults with autism from work, independent living, social contact, and undermine their quality of life, thus increasing support needs. This project aims to address a major gap in our current knowledge - the association between severe emotional and behavioural problems in adults with autism and social outcomes. Identification of markers of adult outcomes aims to lead to an improved understanding of the pathways to better social outcomes, facilitating the development of specific interventions to provide much needed improvements in outcomes for adults with autism.