EPISODE 164 Interview with Elisabeth Sheff. Dr. Elisabeth “Eli” Sheff is a researcher, expert witness, coach, speaker, and educational consultant. With a PhD in Sociology (University of Colorado, Boulder, 2005) and certification as a Sexuality Educator from the AASECT (American Association of Sexuality Educators, Counselors, and Therapists, 2012), Dr. Sheff specializes in gender and sexual minority families, consensual non-monogamy, and kink/BDSM. Sheff is the foremost academic expert on polyamorous families with children, and her 20+ year Polyamorous Family Study is the only longitudinal study of poly families with children to date.