The six-year-old is a complex child, entirely different from the five-year-old. Though many of the changes are for the good -- Six is growing more mature, more independent, more daring and adventurous -- this is not necessarily an easy time for the little girl or boy. Relationships with mothers are troubled -- most of the time Six adores mother, but whenever things go wrong, it's her fault. It used to be, at Five, that she was the center of the child's universe; now, the child is the center of his own universe. Parents need the expert advice of Drs. Ames and Ilg during this difficult year, to explain parent-child relations, friendships with peers, what six-year-olds excel at, how they see the world, what it feels like to be entering the first grade. Children need patience and understanding to help make this transition easier.

Louise Bates Ames (1908–1996) was a lecturer at the Yale Child Study Center and assistant professor emeritus at Yale University. She was co-founder of the Gesell Institute of Child Development and collaborator or co-author of three dozen books, including The First Five Years of Life, Infant and Child in the Culture of Today, Child Rorschach Responses, and Your One-Year-Old through Your Ten- to Fourteen-Year-Old series.

Frances L. Ilg wrote numerous books, including The Child from Five to Ten, Youth: The Years from Ten to Sixteen, and Child Behavior, before her death in 1981. She was also a cofounder of the Gesell Institute of Child Development at Yale.