I examine the epidemiology and behavioural consequences of children experiencing a range of adversities in the low-income countries of insults, in particular the association of autism and developmental disorders with infections of the central nervous system (including malaria, HIV and bacterial meningitis). I am conducting research on genetics of autism, epilepsy and psychosis in sub-Saharan Africa. I also conduct research on the epidemiology and psychiatric co-morbidity of epilepsy in sub-Saharan Africa, examining interventions to reduce the treatment gap and stigma associated with these disorders. I examine the neurocognitive consequences of sickle cell disease in Africa. This research has led to an interest to the mental health of children from immigrant populations in the UK and Europe. My research in Oxford focuses on autism and neurodevelopmental disorders, particular the causes and consequences of these conditions in Europe.