What makes children in their ‘terrible twos’ behave as they do? How can parents decide when their child is ready for day care, and manage their child’s transition to a trusted child minder? Lisa Miller guides parents through their two-year-old’s development, from how to deal with a ‘bossy boots’ to understanding the central importance of toys, and the development of language and nonverbal communicative skills. She describes ways in which parents can help a young child express or resolve difficult feelings or jealousy, come to accept and welcome a new-born sibling, and negotiate friendships.