Individual Presentations

Ericksen, S. et al.  Interindividual variability in diazepam metabolism: Preliminary evidence of an absence of genetic control. International Symposium on Drug and Metabolism, Jerusalem, Israel, March, 1977; American Society for Clinical Pharmacology & Therapeutics, Dallas, Texas, March, 1977.

Segal, N.L. Origins & implications of sinistrality in hand-discordant monozygotic twins. X Behavior Genetics Association, Chicago, Illinois, June, 1980.

Segal, N.L. Zygosity diagnosis: The lab is NOT quicker than the eye. IV International Congress of Twin Studies, London, England, June-July, 1983.

Bohlen, J.G., Wilcox, K.J., Sanderson, M.O., Segal, N.L. & Bouchard, T. B.Sexual development in twins reared apart. IV International Congress of Twin Studies, London, England, June-July, 1983.

Segal, N.L. Cooperation and competition within twin sets. XIII Behavior Genetics Association, London, England, July, 1983.

Segal, N.L., Bouchard, Jr., T.J., & Wilcox, K.J.Monozygotic twins: Discordant hands - discordant minds?I International Society for the Study of Individual Differences, London, England, July, 1983.

Wilcox, K.J., Bouchard, T.J., Jr., Segal, N.L. & Berscheid, E.Do differences in ratings of facial similarity and physical attractiveness correspond to differences in IQ and personality as measured in twins reared apart? XIV Behavior Genetics Association, Bloomington, Indiana, May, 1984.

Bouchard, T.J., Jr., Lykken, D.T., Segal, N.L. & Wilcox, K.J.Development in twins reared apart:A test of the chronogenetic hypothesis. IV International Congress of Auxology, Montreal, Canada, June, 1985.

Bouchard, T.J., Segal, N.L. & Wilcox, K.J. IQ similarity in MZ twins reared apart:Old data and new data. II International Society for the Study of Individual Differences Barcelona, Spain, July, 1985.

Segal, N.L. Holocaust twins:Their special bond.  Founding meeting of the Society for Traumatic Stress Studies, Atlanta, GA, September, 1985.

Segal, N.L., Bouchard, T.J., Jr., Eckert, E.D., Moster, M. & Heston, L.L. Dietarypreferences in twins reared apart. XVI Behavior Genetics Association, Honolulu, Hawaii, June, 1986.

Bouchard, T.J., Jr., Lykken, D.T., Segal, N.L., Eckert, E.D. & Heston, L.L. Anthropometric characteristics of reared apart twins:Fifty years of research. V International Congress of Twin Studies, Amsterdam, Netherlands, September, 1986.

Bouchard, T.J., Jr., Lykken, D.T., Eckert, E.D., Heston, L.L., Tellegen, A., Segal, N.L., & Wilcox, K.J. IQ resemblance in reared apart twins: Within pairs, between pairs, across studies. V International Congress of Twin Studies, Amsterdam, Netherlands, September, 1986.

Segal, N.L. The twin children of the holocaust: A timely tragedy.Society for Research in Child Development, Baltimore, MD, April, 1987.

Segal, N.L. Twins reared together and twins reared apart: Insights on human behavior. Evolution and Human Behavior Conference, Ann Arbor, MI, April, 1988.

Segal, N.L., Bouchard, T.J., Arvey, R.D. & Abraham, L.M. Job satisfaction: Genetic and environmental components. XVIII Behavior Genetics Association Meeting, Nijmegen, Holland, June, 1988.

Peeples, E.E., Segal, N.L. & Bouchard, Jr., T.J.Resemblance in selected handwriting factors in monozygotic twins reared apart. XVIII Behavior Genetics Association Meeting, Nijmegen, Holland, June, 1988.

Segal, N.L.: Twin survivors of Auschwitz-Birkenau: Behavioral, medical and social issues. Remembering for the future: The impact of the Holocaust and genocide on Jews and Christians. Oxford, England, July 10-13, 1988.

Segal, N.L. The Minnesota Study of Twins Reared Apart: Implications for human behavior. University of Minnesota (Conference of the Committee on Institutional Cooperation), Minneapolis, MN, October 20, 1988.

Segal. N.L. Explanations and implications of hand preference and relative birth weight for IQ in monozygotic twin pairs. Evolutionary Psychology and Psychiatry Conference, Ann Arbor, MI, October 28-30, 1988.

Bouchard, T.J., Jr., Segal, N.L. & Samuels, J.Twins reared apart: Genetic and cognitive factors in spelling.National Reading Conference, Tucson, AZ, November 30-December 3, 1988.

Bouchard, T.J., Jr., McGue, M., Segal, N.L., Lykken, D.T., Tellegen, A. & Eckert, E.D.: Genetics and personality: An analysis of adopted twins reared apart. Society for Biological Psychiatry, May, 1989.

Segal, N.L. & Roy, A.: A study of suicide in twins.VI International Congress of Twin Studies, Rome, Italy, August 28-31, 1989.

Segal, N.L.: Cooperation and competition between twin children: Replication and extension. VI International Congress of Twin Studies, Rome, Italy, August 28-31, 1989.(Supported by NSF: BNS-8709207)

Bouchard, T.J., Jr. & Segal, N.L.: Genetic influences on special mental abilities in a sample of reared apart twins.  VI International Congress of Twin Studies, Rome, Italy, August 28-31, 1989.

Segal, N.L.: Cooperation and Competition in adolescent MZ and DZ twin pairs during a Prisoner’s Dilemma Game. Society for Research in Child Development, Seattle, WA, April 18-20, 1991.

** Segal, N.L., Brown, K. & Topolski, T. A twin study of olfactory sensitivity.  VII International Congress of Twin Studies, Tokyo, Japan, June 22-25, 1992.

** Segal, N.L., Bouchard, T.J., Jr., Gitlin, D. Grief following the loss of a twin and other relatives.VII International Congress of Twin Studies, Tokyo, Japan, June 22-25, 1992.

Segal, N.L. Twin research: Implications for legal cases involving young children. Society for Research in Child Development, New Orleans, LA, March 25-28, 1993.

** Wilson, S.M., Segal, N.L. & Bouchard, T.J., Jr.  Bereavement following the loss of a twin and other relatives. Western Psychological Association, Phoenix, AZ, April 22-25, 1993.

Segal, N.L., Roy, A., & Sarchiapone, M. Twin study of suicidal behavior. 24th Behavior Genetics Association, Barcelona, Spain, July 7-10, 1994.

Twin Research: New Findings and New Applications.Faculty Forum Series, CSU Fullerton, February 28, 1995. 

Segal, N.L., & Roy, A. Attempted suicide in monozygotic and dizygotic twins whose co-twins' deaths were non-suicides. XVIII International Association for Suicide Prevention, June 4-8, 1995, Venice, Italy.

Roy, A., Roy, M., Solt, V., Pitera, M., Segal, N. et al. Suicide among psychiatric hospital inpatients. XVIII International Association for Suicide Prevention, June 4-8, 1995, Venice, Italy.

Segal, N.L. Twin research perspective on human development.Genetic, Ethological and Evolutionary Perspectives on Human Development (Festschrift). October 27-29, 1995, University of Chicago, Chicago, IL.

** Kee, D.W., McBride, D., Neale, P., & Segal, N.L. Manual and cerebral laterality in hand-discordant monozygotic twins. 36th Psychonomic Society, November 10-12, 1995, Los Angeles, CA.

Segal, N.L. Twin studies of human behavior. Biology Seminar Series, November 15, 1995, CSU Fullerton, Fullerton, CA.

Segal, N.L. Twin research perspectives on human development.University of California, Los Angeles, Developmental Psychology Series, February 20, 1996.

Segal, N.L. Intellectual resemblance in unrelated children of the same age. 26th Behavior Genetics Association, Pittsburgh, PA, June 13-16, 1996.

Segal, N.L. Use of twin research methods in evolutionary psychology. Human Behavior and Evolution Society, June 26-June 30, 1996, Chicago, IL.

** Lay, C.M., Segal, N.L., & Christian, D.L. Ethological analysis of social interaction in twin children. 13th Conference of the International Society for Human Ethology, August 5-10, 1996, Vienna, Austria.

Segal, N.L. Twin research perspective on human development: Issues, methods and studies. New York University, Developmental Psychology Seminar Series, September 18, 1997.

Segal, N.L. Twin research in action. New York University, Developmental Psychology Seminar Series, September 25, 1997.

Segal, N.L. Twins and what they tell us about human behavior. CSU Fullerton, Faculty Research Series, March 23, 1999.

** Segal, N.L., & Arad, S.Friendship Extraordinaire: Social Relationships Between Twins Reared Apart and Together. Human Behavior and Evolution Society, Salt Lake City, UT, June 2-6, 1999.

Segal, N.L. Intellectual resemblance of same-age unrelated siblings: New findings. Behavior Genetics Association, Vancouver, Canada, July 3 - 7, 1999.

Segal, N.L. "Virtual Twins:" IQ Similarity of Same-Age Unrelated Pairs. International Society for the Study of Individual Differences, Vancouver, Canada, July 7-10, 1999.

** McGuire, S., Segal, N.L., Clifford, J., & Richmond, T. Different-sex fraternal twins: Did we forget them? Society for Research in Adolescence, Chicago, IL, March 30-April 2, 2000.

** Diaz, P.M. Hagan, C., & Segal, N.L. Searching for hypothetical twins, siblings and others: Who do children favor? UCLA Undergraduate Research Conference. Los Angeles, CA, May 10, 2002.

Segal, N.L. Twin film analysis of cooperation and competition. Human Behavior and Evolution Society, Rutgers University, New Brunswick, NJ, June 19-23, 2002.

Segal, N.L. Twin film analysis: Judgements of MZ and DZ twin pairs in action. International Society for Human Ethology, Montreal, Canada, August 7-10, 2002.

Ravich-Shcherbo, I.V., & Segal, N.L. Alexander Romanovich Luria – Founder of Native Psychogenetics. One Hundredth Anniversary Celebration of AR Luria, Moscow State University, Moscow, Russia, September 24-26, 2002.

** Castillo, R., Segal, N.L., Marelich, W.D., & Mearns, J.  Problem behaviors in virtual twins: Analysis of shared family influences. Western Psychological Association, Vancouver, B.C., May 1-4, 2003.

** Segal, N.L., McGuire, S., Havlena, J., Davis, J., Hobson, L., Hershberger, S., Seghers, J., & Amon, A. Virtual twins: Updated analyses of within-family environmental influences on intelligence—and a new ongoing study. International Twin Congress, Odense, Denmark, July 1-4, 2004.

Segal, N.L. MZ female twins discordant for transsexualism: A pair of case reports. International Society for Twin Studies Mid-Congress Conference, Los Angeles, CA, June 29, 2005.

Segal, N.L. MZ female twins discordant for transsexualism: Process and progress. International Behavioral Development Symposium, Minot, ND, August 3-6, 2005.

Segal, N.L., Chavarria, K., Marelich, W.D., Seghers, J.P., & Evans, K. Social closeness and gift-giving behavior of MZ and DZ twins toward their nieces and nephews. International Society for Human Ethology, Detroit, MI, July 30-August 3, 2006.

Segal, N.L., McGuire, S., Havlena, J. Gill, P., & Hershberger, S.L. Intellectual resemblance of virtual twins, measured at two time points. Western Psychological Association, Vancouver, Canada, May 3-6, 2007.

Segal, N.L., & Stohs, J.H. Biological and rearing influences on menarche: Twins reared apart and together. Western Psychological Association, Irvine, CA, April 10-13, 2008.

Segal, N.L., & Stohs, J.S. Concordance for menarche in twins reared apart and together. International Society for Human Ethology, Bologna, Italy, July 13-17, 2008.

Segal, N.L. & Marelich, W.D. Update: A twin-family study of social closeness and perceived similarity. Human Behavior & Evolution Society, Fullerton, CA, May 27-31, 2009.

Segal, N.L., & Hoven Stohs, J. First study of age at intercourse in twins reared apart. American Psychological Association, Toronto, Canada, August 6-9, 2009.

Segal, N.L. Suicidal Behaviors in Twins Whose Co-Twins’ Deaths Were Suicides and Non-Suicide. 13th International Congress of Twin Studies, Seoul, South Korea, June 4-7, 2010.

Segal, N.L., & Stohs, J.H. Chinese Twins Adopted Separately and Reared Apart: First Prospective Study of Co-Twin Reunions. International Society for Human Ethology, Madison, WI, August 1-5, 2010.

Segal. N.L. Personality similarity in unrelated look-alike individuals: Resolving a twin study challenge. International Congress of Twin Studies, Florence, Italy, April 1-4, 2012.

Segal, N.L. Twin studies and how they contribute to evolutionary analyses of behavior. Sixth Annual California Workshop on Evolutionary Perspectives on Human Development, San Luis Obispo, CA, May 4-6, 2012.

Segal, N.L. Personality similarity in unrelated look-alike individuals: Resolving a twin study challenge. Behavior Genetics Association, June 22-25, 2012, Edinburgh, Scotland.

Segal, N.L.  Behavior Genetics Association, Historical moment in reared apart twins studies: Filmed discussion between Thomas J. Bouchard, Jr. and Niels Juel-Nielsen, June 22-25, 2012, Edinburgh, Scotland.

Segal, N.L. Personality resemblance in unrelated look-alike individuals: Resolving a twin study challenge. International Society for Human Ethology, Vienna, Austria, August 13-17, 2012.

**Segal, N.L.Graham, J.L., & Ettinger, U. Personality similarity and social closeness: What unrelated look-alikes tell us. Western Psychological Association, Reno, NV (Session Chair), April 25-28, 2013.

**Munson, J., & Segal, N.L.A meeting of minds: Tacit coordination in adolescent and adult twins. Western Psychological Association, Reno, NV, April 25-28, 2013.

**Segal, N.L.Graham, J.L., & Ettinger, U. Personality similarity in unrelated look-alike individuals: Constructive replication and social attraction. Behavior Genetics Association, Marseille, France, June 28-July 1, 2013.

**Segal, N.L., Graham, J.L., & Ettinger, U. Personaloty similarity in unrelated look-alike individuals: Phenotypic matching and social attraction. Human Behavior and Evolution Society, Miami, FL, July 17-20, 2013. 

Segal, N.L., & Diamond, M. Reared apart twins concordant for transsexualism. Western Psychological Association, Portland, OR, April 24-28, 2014.

Segal, N.L., Brown W.L., Kashani, J., & Craig, J.M. Are twins reared apart more epigenetically discordant than twins reared together? 15th International Congress of Twin Studies, Budapest, Hungary, November 16-19, 2014.

** Segal, N.L. Munson, E., Marelich, W.D., Goetz, A.T., &, McGuire, S.A. Chair: International twin studies of cooperation, competition and altruism. Paper: Twin studies of tacit coordination: New findings in an adolescent and adult sample. 15th International Congress of Twin Studies, Budapest, Hungary, November 16-19, 2014.

** Yirmiya, K., Segal, N.L., Bloch, G., & Knafo, A. Prosocial and pro-self behavior between twins: Findings from the Differential Productivity Task. 15th International Congress of Twin Studies, Budapest, Hungary, November 16-19, 2014.

** Segal, N.L., Goetz, A.T, & Moldanado, A.C. Cooperative eyes in evolutionary context: Autism Spectrum Disorder children and typically developing children/adults compared. Human Behavior and Evolution Society, Columbia, MO, May 27-May 31, 2015.

** Segal, N.L., Li, N., Graham, J. L., Miller, S.A., & McGuire, S.A. Virtual twins: Individual differences and evolutionary perspectives; session chair and presenter. International Society for the Study of Individual Differences, London, Ontario, Canada, July 27-July 31, 2015.

Segal, N.L. Twins reared apart and the Colombian Twin Project (with Jeffrey Craig). 4th International Network of Twin Registries Consortium. Osaka, Japan, September 28-29, 2015.

Segal, N.L. Unusual twin cases. 4th International Network of Twin Registries Consortium. Osaka, Japan, September 28-29, 2015.

Cutler, T.L., Craig, J.M., Segal, N.L., M.P., Keogh, L.A., Rankin, M., Denton, J., Derom, D.A., Sumathipala, A., J.R., & Hopper, J.L. Can we do more to help parents of newborn twins understand about zygosity and chorionicity? International Society for Twin Studies, Brisbane, Australia, June 20, 2016.

** Segal, N.L., Mollova, S., Marelich, W.D., & Preston, K. Does genetic relatedness affect social closeness toward nieces and nephews? A twin-family study. Human Behavior and Evolution Society, Vancouver, Canada, June 29-July 2, 2016.

Segal, N.L. Twins Reared Apart and Together: The Science behind the Fascination. University of Cincinnati, Department of Criminal Justice, Cincinnati, Ohio, April 14, 2017.

** Segal, N.L., Mollova, S., Marelich., W.D., & Preston, K. Does Genetic Relatedness Affect Social Closeness Toward Nieces and Nephews? A Twin-Family Study. Western Psychological Association, Sacramento, CA April 27-April 30, 2017.

** Segal, N.L., Hernandez, B., Graham, J. & Ettinger, U. Pairs of genetically unrelated look-alikes: Further tests of personality resemblance and social affiliation. Human Behavior and Evolution Society, Boise, ID, May 31-June 3, 2017.