Presentations at Conferences and Scientific Meetings

Invited Presentations

Segal, N.L.  The Minnesota Study of Twins Reared Apart.  Department of Psychology: Faculty-Student Research Symposium, University of Wisconsin, Eau Claire, Wisconsin, April 7, 1984.

Segal, N.L. Cooperation and competition within twin sets. Animal Behavior Society-International Society for Human Ethology Meeting (Session: Human Reproductive Strategies:Empirical Tests of Evolutionary Hypotheses) Eastern Washington University, Cheney, Washington, August, 1984.

Segal, N.L. Twin research and adoption. American Adoption Congress, Milwaukee, WI, May, 1986.

Segal, N.L. The Minnesota Study of Twins Reared Apart: Recent findings and their implications for human behavioral development. Twins Symposium, University of London, Queen Charlotte’s Hospital for Women, July 8, 1988.

Segal, N.L. Research on twins reared apart. Twins and Multiple Births Association, London, England, July 16, 1988.

Segal, N.L. Bereavement in adult twins (Keynote address). VI Working Party on Multiple Birth (International Society for Twin Studies), Chicago, IL, September, 1988.

Segal, N.L., Eckert, E.D., Grove, W.M., Bouchard, T.J., Jr. & Heston, L.L. Psychiatric investigations and findings from the Minnesota Study of Twins Reared Apart: An overview and update. (Invited: Chair and presentation for a symposium:Twin and Adoption Studies in Psychiatry). Regional Symposium: Etiology of Mental Disorder (World Psychiatric Association).Oslo, Norway, August 23-26, 1990.

Segal, N.L. Review of "Like Two Peas in a Pod" (film on twin relationships). 99th American Psychological Association Convention, San Francisco, CA, August 16-20, 1991.

Segal, N.L. Genetics and the life cycle. Roundtable #1:The human development experience and study of the life cycle. Fiftieth Anniversary Celebration of the Committee on Human Development, University of Chicago, Chicago, IL, October 18-20, 1991.

Segal, N.L. Twin research in psychiatry and psychology. Distinguished Lecturer Series, Psychiatric Association of New Mexico, November 23, 1991.

Segal, N.L.  Twin research:Implications for legal cases involving twins.Psychology and Law Symposium, California State University, Fullerton, CA, March 19, 1993.

Segal, N.L. Psychological issues of twins. University of California, Irvine, Psychiatry resident series, November 10, 1993.

Segal, N.L. Twin studies: What they reveal about human development.University of California, Riverside, Psychology Department Developmental Series, January 24, 1994.

Segal, N.L. Studies of twins: New findings and applications. Science Conference, Modesto Junior College, March 25, 1995, Modesto, CA.

Segal, N.L. Psychological twin research: Methods, findings and implications for human development. Western Psychological Association, March 30-April 2, 1995, Los Angeles, CA.

Segal, N.L. Twin research and gender-related differences. Conference on the Biological Basis of Sexual Orientation and Sex-Typical Behavior (Invited presentation). May 25-27, 1995, Minot, ND.

Segal, N.L. Double exposure: Twin-based insights into the genetics of human behavior.Conference on Evolutionary Psychology and Humanistic Ethics (Skeptics Society), Pasadena, CA, March 30-31, 1996.

Segal, N.L. Editing an academically-oriented book of writing. American Psychological Association, San Francisco, CA, August 18, 1998.

Segal, N.L. Twins and what they reveal about human behavior. Genetics Graduate Student Association, North Carolina State University, Raleigh, NC, September 28, 1998.

Segal, N.L. Twins in science, in society and in our daily lives. Department of Psychology, Seminar Series, University of California, Riverside, February 4, 1999.

Segal, N.L. Lectures in series: Twins, Doubles, Simulacra. Scripps College Humanities Institute, Claremont, CA, March 4-5, 1999.

Segal, N.L. Twins in science, in society and in our daily lives. Sigma Delta Epsilon (Graduate Women in Science). Tenth Science Conference, Chapman University, March 6, 1999.

Segal, N.L. Entwined lives: Twin studies and what they tell us about human behavior and development. Henry Ford Community College, Southfield, MI, March 30, 1999.

Segal, N.L. Twins and what they reveal about human behavior. University of Michigan, Ann Arbor, MI, March 30, 1999.

Segal, N.L. Entwined Lives: Twins and what they tell us about human behavior. CSU Fullerton, Psychology Day, April 22, 1999.

Segal, N.L. Twin Studies. CSU Fullerton, Psi Chi, May 12, 1999.

Segal, N.L. Twins: What they tell us about human behavior. Fullerton College, May 13, 1999.

Segal, N.L. Twins in science and society. Gruter Institute Conference on Law and Biology. Squaw Valley, CA, June 8-13, 1999.

Segal, N.L. Twins: Scientific, Societal and Legal Issues. Society for Evolutionary Analysis in Law. Pittsburgh, PA, September 24-25, 1999.

Segal, N.L. Twins: What they tell us about who we are. Biology Department, CSU Long Beach, October 12, 1999.

Segal, N.L. Twins: What we need to know. Northwest Association of Mothers of Twins, Boise, ID, April 28, 2000.

Segal, N.L. Twins in Science, Society and Daily Life. Graduate Women in Science, San Diego, CA, May 6, 2000.

Segal, N.L. Twins:  Answers to questions. New Zealand Multiple Birth Association National Conference, Hawke’s Bay, NZ, September 29-October 1, 2000.

Segal, N.L. Twin research perspectives on human development. University of Auckland, New Zealand, October 4, 2000.

Segal, N.L. Twin research perspectives on human development. University of Otago, New Zealand, October 6, 2000.

Segal, N.L. Twins. Human Genome Project Forum. CSU Fullerton, November 2, 2000, Fullerton, CA.

Segal, N.L. Twins: New findings for parents of twins. Southern California Mothers of Twins Club, November 4, 2000, Long Beach, CA.

Segal, N.L. Twins and what they tell us about human behavior. University of Southern California, Medical School. March 9, 2001.

** Segal, N.L., Blozis, S.A., & Sussman, L. When twins lose twins: Implications for theory and practice. International Society for Twin Studies, London, England, July 4-7, 2001.

** Segal, N.L., & Arad, S. Social relationships: Twins reared together, twins reared apart and twins without partners. International Society for Twin Studies, London, England, July 4-7, 2001.

** Segal, N.L., Etchells, S., Houston, N., & Bertram, C.V. Virtual twins and what they tell us about human behavior. International Society for Twin Studies, London, England, July 4-7, 2001.

Segal, N.L. Famous twins and what they tell us about human behavior. Twin and Multiple Birth Association (TAMBA), London, England, July 7, 2001.

Segal, N.L. Twin and adoption research: Tests of evolutionary-based hypotheses. Behavior, Evolution and Culture Series, UCLA, Los Angeles, CA, November 19, 2001.

Segal, N.L.Twins and what they tell us about human behavior. Danish Twin Registry, Odense, Denmark, April 2, 2002.

Segal, N.L. Special types of twins and what we need to know about them. Nordic Twinnet, Odense, Denmark, April 2, 2002.

Segal, N.L. Parenting multiples: The impact on the family. Durham Region Parents of Multiple Birth Association (POMBA), Durham, Ontario, Canada, May 24, 2002

Segal, N.L. Twin and Adoption Studies: New Research on the Nature-Nurture Equation. National Institute on the Teaching of Psychology (NITOP), Tampa, FL, January 2-5, 2003.

Segal, N.L. Evolutionary psychology and personality (discussant). Tooby Center for Evolutionary Psychology, University of California, Santa Barbara, CA, September 15, 2003.

Segal, N.L. Twin studies of homosexuality. (Panelists: Mustanski, B., Segal, N.L., Vilain, E., & Bocklandt, S.) Genetic influences on sexual orientation.  International Behavioral Development Symposium, Minot, ND, August 3-6, 2005.

Segal, N.L. Twins and virtual twins: From the laboratory to the real world. Western Psychological Association, Portland, OR, April 23-26, 2009.

Segal, N.L. Twins: The finest natural experiment. The Nature, Origin and Consequences of Individual Differences in Behavior:
A Festchrift in Honor of Thomas J., Bouchard, Jr. Minneapolis, MN, July 16-17, 2009.

Segal, N.L. Loss of a Twin: Research Findings. Twinless Twins Support Group International Annual Meeting, Denver, CO, July 15-18, 2009.


Segal, N.L. Twins separated at birth: Lessons in nature vs. nurture. Saddleback College, Psychology Speaker Series, Mission, Viejo, CA, October 9, 2012.

Segal, N.L. Twins separated at birth: Lessons in nature vs. nurture. Saddleback College, Psychology Speaker Series, Mission, Viejo, CA, October 9, 2012.

Segal, N.L. A twin research approach to evolutionary questions. Society for Personality and Social Psychology (Evolutionary Psychology Pre-Conference), Austin, TX, February 13, 2014.

Segal, N.L. Twins raised apart: The science behind the stories. Healthier Kids: Insights From Twin Research, Royal Children’s Hospital, Melbourne, Australia, December 5, 2014.

Segal, N.L. Balancing individuality and twinship. Healther Kids: Insights From Twin Research, Royal Children’s Hospital, Melbourne, Australia, December 5, 2014.

Segal, N.L. Human Development Alumni Panel (75th Anniversary Celebration). University of Chicago, May 13-14, 2016.


Segal, N.L. Linda Mealey Memorial Symposiu). International Society for Human Ethology, Boise State University, June 5, 2017.


Segal, N.L. Ethological Methods Workshop. International Society for Human Ethology, Boise State University, June 4, 2017.

**co-authored with current/former CSUF student