This book illuminates and integrates four decades of work related to the ASEBA. Starting with the ASEBA's origins in the 1960's, it traces major milestones in the ASEBA's conceptual, methodological, and theoretical development. It also elucidates applications of the ASEBA to practical assessment, training, and research. Building on the accomplishments to date, the book outlines directions for continued advances in areas such as Service Systems, Conceptual models, Training practitioners and researchers, Profile patterns, and Multicultural research & applications. The book is published by the Research Center for Chiildren, Youth and Families. 154 pages.