This book takes an unrelenting look at the hidden worlds of young children's sexualities. Based upon extensive group interviews and observation, this book taps into and conceptualizes the significance of young children's understandings of their own sexualities. The author illustrates how sexuality and gender are embedded in children's cultures, peer relations and identity formations: how being a "good" boy or girl involves investing in a heterosexual identity and how girls are central to the formation of boys' sexual cultures and identities.