The creative contributions of this volume highlight the importance of engaging in a nuanced examination of the conditions and possibilities of successful and unsuccessful transformations during this crucial phase of life. They also reflect both international differences and commonalities in the perceptions of adolescence regarding psychological development, treatment, and theory. Psychological developments during adolescence are characterized by new demands. They present specific opportunities, but under unfavorable conditions, they can also lead to significant conflict or crisis potentials. The way these challenges are managed has lasting implications for adult life.