CTRD NIH Pre-doctoral Trainees are outstanding IU graduate students whose integrative research interests focus on behavior and physiology in humans and other animals and will address key questions in three related themes: (1) genetic, epigenetic, environmental, and parental contributions to reproductive and social behavior; (2) the origins and expression of differences among the sexes; and (3) sex and immunity in health and disease. Awards are for 12 months of stipend support and include a small allowance for research expenses and travel. CTRD Trainees MUST be citizens, non-citizen nationals or permanent residents of the US.