Larry Cahill, Ph.D., is a professor in the Department of Neurobiology and Behavior at the University of California, Irvine. He first became interested in brain and memory as an undergraduate at Northwestern University. After working on memory-enhancing drugs at G.D. Searle & Company in Illinois for two years, he earned his Ph.D. in neuroscience from the University of California, Irvine, in 1990. Following postdoctoral research in Germany, he returned to UC Irvine to extend his research to studies of human subjects, which in turn led to his discoveries about sex influences on emotional memory, and to his current general interest in the profoundly important issue of sex influences on brain function. His work has been highlighted in the New York Times, London Times, Frankfurter Allgemeine Zeitung, and on PBS, CNN, and 60 Minutes.