Segal, N.L. Review of the literature on hand-discordant monozygotic twins. (Panel participant: The genetics of spatial ability and laterality) X Behavior Genetics Association, Chicago, IL, June 1980.
Segal, N.L., Bouchard, T.J., Jr., Wilcox, K.J., Heston, L.L. & Eckert, E. An analysis of self-reported fears in monozygotic and dizygotic twins reared apart. (Session: Twins Reared Apart) XIV Behavior Genetics Association, Bloomington, IN, May, 1984.
Segal, N.L. The first international conference on twins, survivors of the Holocaust:Behavioral and medical-genetic issues.(Plenary Session) XV Behavior Genetics Association, Pennsylvania State University, University Park, PA, June, 1985.
Rubin, E.J., Bouchard, T.J., Jr., & Segal, N.L.Self-reported family background characteristics of a reared-apart twin sample. (Session: Twins Reared Apart) XVII Behavior Genetics Association, Minneapolis, MN, June, 1987.
Segal, N.L.: Twin research at Auschwitz-Birkenau: Implications of the use of Nazi data today. (Panel discussant: Can scientists use information derived from the concentration camps?) The Meaning of the Holocaust for Bioethics, University of Minnesota, Minneapolis, MN, May 17-19, 1989.
Bouchard, T.J., Jr., Segal, N.L. & Lykken, D.T.Genetic and environmental influences on special mental abilities in a sample of twins reared apart. VI International Congress of Twin Studies, Rome, Italy, August 28-31, 1989.
Segal, N.L. Implications of psychological twin research for cases involving twins. 98th American Psychological Association (New Studies in Psychology and Law). Boston, MA, August 10-14, 1990.
Segal, N.L. Chair: Application of psychological and medical twin research findings in the legal domain. VII International Congress of Twin Studies, Tokyo, Japan, (June 22-25, 1992).
Segal, N.L. Implications of twin research for legal issues involving twins. VII International Congress of Twin Studies, Tokyo, Japan, June 22-25, 1992.
Segal, N.L. Same-age unrelated siblings: A unique test of nature and nurture. Symposium: Unusual case studies as guidelines for developmental research. Society for Research in Child Development, New Orleans, LA, March 25-28, 1993.
Segal, N.L. Workshop on research methods. International Society for Human Ethology, August 2-7, 1994, Toronto, Canada.
Segal, N.L. Forensic issues raised by psychological and medical twin research (Symposium Chair).9th International Twin Congress, May 28-June 31, 1995, Richmond, VA.
Segal, N.L. Behavioral genetics and evolutionary psychology: New methods, new ideas and new links. (Symposium Chair and Organizer). 27th Behavior Genetics Association meeting, Toronto, Canada, July 10-13, 1997.
Segal, N.L. Watching what people do: Fresh insights from field and laboratory observations.(Symposium Chair and Organizer). 105th American Psychological Association, Chicago, IL, August 15-19, 1997.
Segal, N.L. Twin-based perspectives on human cloning. Ethical Implications of Human Cloning. Graduate Women in Science, Sigma Chapter. CSU Fullerton, October, 27, 1999.
Segal, N.L. Twins in science, society and daily life (Group discussion leader). Behavior Genetic Principles - Development, Personality, and Psychopathology, University of Minnesota, Minneapolis, MN, June 8-9, 2001.
Segal, N.L. Organizer, Chair and Presenter: Symposium: Twins, virtual twins, and siblings: Fresh perspectives on old issues. American Association for the Advancement of Science (Pacific Division), June 17-20, 2001, Irvine, CA.
Segal, N.L. Organizer and Chair: Symposium on controversial issues in twin studies. International Society for Twin Studies, London, England, July 4-7, 2001.
Segal, N.L. Human cloning: A twin-research perspective. Hastings Law Journal Symposium on Human Cloning. Hastings Law School, University of California, San Francisco, January 26, 2002.
Segal, N.L. Twin research findings and methods and their implications for human behavioral development. American Association of Physical Anthropologists (Co-sponsored by the American Association of Anthropological Genetics): Genetic basis of neurobehavioral phenotypes: Methods, applications and controversies. Tempe, AZ, April 23-26, 2003.
Segal, N.L. Twin studies and evolutionary psychology: Tribute to Dr. Linda Mealey (organizer and panel chair). Human Behavior and Evolution Society, Berlin, Germany, July 21-25, 2004.
Segal, N.L. Behavioral genetics, human ethology and evolutionary psychology: Tribute to Dr. Linda Mealey (organizer and panel chair). International Society for Human Ethology, Ghent, Belgium, July 27-30, 2004.
McGuire, S, & Segal, N.L. Parental differential treatment of siblings in three twin contexts: MZs, DZs and VTs. Symposium: “The Ecologies of Parental Differential Treatment of Siblings.” Society for Research in Child Development, Atlanta, GA, April 7-10, 2005.
Segal, N.L., Seghers, J.P., Marelich, W.D., Chavarria, K., & and Mechanic, M. A twin-family study of social closeness: Aunts, uncles, nieces and nephews. Human Behavior and Evolution Society, May 30 – June 3, 2007, Williamsburg, VA.
Segal, N.L. & Johnson, W. “It’s Always Better With Twins:” Remembering the Life and Research of David T. Lykken (Symposium Proposal). International Society for Twin Studies, June 6-9, 2007, Ghent, Belgium.
Segal, N.L., Hoven Stohs, J., & McGuire, S.A. Chinese twin children reared apart and same-age unrelated children reared together: Mirror-image look at behavioral development. International Society for Twin Studies, June 6-9, 2007, Ghent, Belgium.
Segal, N.L., McGuire, S.A., Miller, A., & Havlena, J. Twin studies of tacit coordination. (Symposium: Genetics of traits favoring socioeconomic success). Behavior Genetics Association, Louisville, KY, June 25-28, 2008.
Segal, N.L., McGuire, S.A., Miller, A., & Havlena, J. Twin studies of tacit coordination. (Symposium: Decision-Making Through the Lens of Evolutionary Psychology) American Psychological Association, Boston, MA, August 14-17, 2008.
McGuire, S., Segal, N.L., & Foertsch, A. Sibling differences in exposure to peer delinquency and risky behavior: A twin-sibling-adoption design (Symposium: We Haven’t Given Up: Developments in Nonshared Environment Research). Society for Research in Child Development, Denver, CO, April 2-4, 2009.
McGuire, S., Segal, N.L., Majel Baker, M., & Foertsch, A. Sibling trustworthiness and adjustment: A twin-sibling-adoption study. Society for Research in Child Development, Philadelphia, PA, March 11-13, 2010.
Segal, N.L., McGuire, S., & Stohs, J.S. Virtual Twin Studies: What They Tell Us About Human Behavior. Recent Behavioral Genetic Contributions to the Study of Individual Differences. International Society for Individual Differences, London, England, July 25-28, 2011.
Segal, N.L. Chair, Twinning Rates: New Findings and Current Trends. International Congress of Twin Studies, Florence, Italy, April 1-4, 2012.
Segal, N.L. Linda Mealey Memorial Symposium, International Society for Human Ethology, Boise State University, June 5, 2017.
Segal, N.L. Twin Methods Workshop, International Society for Human Ethology, Boise State University, June 4, 2017.
Segal, N.L. Chair and Organizer: Symposium in Honor of Irv Gottesman, International Society for Twin Studies (Twin Congress), Madrid, Spain, November 16-18, 2017.
Segal, N.L. Twins Reared Apart: The Science Behind the Fascination: Symposium in Honor of Irv Gottesman, International Society for Twin Studies (Twin Congress), Madrid, Spain, November 16-18, 2017.