The book integrates classic and contemporary theory and research in the field of Developmental Psychology, with an emphasis on lifelong development and its connection to the individual's biology and environment.

It also presents the common features and differences among specific national groups and discusses the broader social environment in which the individual develops.

The author's aim is to provide a text that allows students to achieve a meaningful understanding of concepts and theory, to grasp the various aspects of development, to critically examine conflicting views, and to apply knowledge to their everyday lives.