Watch Secret Life of 4, 5, 6 Year Olds UK

This week the 5 year olds enjoy success and come face-to-face with failure, as the scientists explore how these experiences impact on young children.

This week the nursery throws its doors open to a very special international class of children, from across Britain and around the world.

In this episode, we uncover how 4 year olds form relationships with each other and reveal a fascinating world of friendships, rivalries and romances.

In this episode technology takes over the Secret Life nursery, as the 4 year olds get to grips with the classroom of the future. How will tablets, robots and other gadgets impact on the way the children play? And what is tech doing to the bodies and brains of this generation of digital natives?