S. Marc Breedlove, the Barnett Rosenberg Professor of Neuroscience at Michigan State University, has written over 100 scientific articles investigating the role of hormones in shaping the developing and adult nervous system, publishing in journals including Science, Nature, Nature Neuroscience, and the Proceedings of the National Academy of Science. He has been widely interviewed about his research by periodicals including the San Francisco Chronicle, Los Angeles Times, New York Times, and Newsweek, as well as broadcast programs such as All Things Considered, Good Morning America, and Sixty Minutes. He has active grant support from the National Institute of Neurological Disorders and Stroke, the National Institute of Mental Health, and the National Science Foundation. Dr. Breedlove is a Fellow of the American Association for the Advancement of Science and the Association for Psychological Science. Neil V. Watson is Professor of Neuroscience in the Department of Psychology, Simon Fraser University , Vancouver, Canada. He teaches biological psychology to hundreds of undergraduate and graduate students each year. Neil and the members of his lab study sex-related aspects of the structure and function of the nervous system, with ongoing grant support from the Natural Sciences and Engineering Research Council of Canada. His work on topics ranging from the effects of steroids on cell survival, to the neural control of reproductive behavior, to human cognitive sex differences has appeared in a variety of journals, including the Journal of Neuroscience, the Proceedings of the National Academy of Science, and Brain Research.