S. Marc Breedlove is the Rosenberg Professor of Neuroscience at Michigan State University. He has written over 100 scientific articles investigating the role of hormones in shaping the developing and adult nervous system, publishing in journals that include Science, Nature, Nature Neuroscience, and the Proceedings of the National Academy of Science. Breedlove is also passionate about teaching, both in the classroom, and in the greater community through interviews with the Washington Post, Los Angeles Times, New York Times, and Newsweek, as well as broadcast programs such as All ThingsConsidered, Good Morning America, and Sixty Minutes. After teaching popular Hormones and Behavior and Biological Psychology courses during his 20 years at Berkeley, Breedlove co-authored textbooks on each subject that are still in print today. Having taught Introductory Psychology at Berkeley and at Michigan State University since 2001, he began working on a text that emphasizes a research perspective and overarching concepts while maintaining a reader-friendly writing style. Breedlove is a Fellow of the American Association for the Advancement of Science and the Association for Psychological Science.