This comprehensive, multidisciplinary text presents an empowering view of adulthood through an examination of the nature and sources of diversity and the influences of age, gender, cohort, race/ethnicity, socio-economic status, and culture on development. This fourth edition continues its commitment to being the most current, comprehensive, scholarly, and readable text on adult development and aging available. While retaining its theoretical foundations in the life-span developmental perspective and the contextual model of development as represented by Bronfenbrennerrs"s Ecological Systems Theory, this text has been thoroughly revised to strengthen and polish its pedagogy and organization, still allowing room for the most current research and thinking in the field and expanded treatment of emerging hot topics. Students will find this topically organized text an engaging and accessible introduction to the challenges and opportunities of adult life. Features Fresh perspectivesare offered from the field, including expanded coverage of high-interest and highly relevant material. Emphasis on development-in-context, and on the nature and sources of diversityhelps the reader to grasp and appreciate individual differences in development. Strong pedagogical structureactively engages the reader, clarifies and reinforces content, enhances comprehension, and maximizes retention. Real-life applications integrated throughoutprovide a bridge between theory, research, and practice, enabling students to connect with the material on a personal level. New to This Edition Material on emerging hot topicsexposes students to the most current research and perspectives in the field. Additional material enhances student appreciation for thecontext of development,includingUnderstanding the Developmental Contextboxes throughout. Two new boxes include a discussion of a new transitional developmental stage calledMidcourse: Let's Retire the Concept of Retirementin Chapter 2 and a review of research on so-called brain-enhancing chemicals calledBetter Thinking through Chemistry'in Chapter 5.Barbara Hansen Lemme is the author of 'Development in Adulthood (4th Edition)', published 2005 under ISBN 9780205439645 and ISBN 0205439640.