Sleep's purposes and benefits—and the impacts of not sleeping well or well enough—have been intensively investigated as a modern science for nearly 60 years. Sleep Science is an advanced introduction to the subject of sleep and sleep disorders. Designed for upper-division undergraduate students who have completed introductory prerequisites in behavioral principles, systems physiology, and research methods, it is also appropriate for the post-graduate student adding sleep to their training portfolio. Sleep Science is ideal for use in a standard semester- or quarter-based course, and is organized into thematic sections: normative adult sleep; lifespan development; sleep and circadian disorders and treatments; sleep assessments; and sleep as a profession. Cross-cutting issues are specifically addressed in chapters such as women's health and culture. Chapters conform to a standardized layout and are authored by subject matter experts, all of whom are also sleep educators. Edited for a consistent voice and continuity, each chapter features explanatory figures, tables, and/or photographs to illustrate key concepts.