Your Five-Year-Old

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.