Power Struggles. Professor Robert Winston focuses on early behavioural instincts and the battle of wills in the second of this year's three progress reports on 25 children. Showing how the two-year-olds are developing their independence, he reveals the importance of self-awareness and asks whether a depressed mother will have a lasting effect on her son. Series producer Tessa Livingstone : Executive producer Sarah Hargreaves
www.bbc.co.uk/science Is your child an owl or a lark? page 34