, Volume 42, Issue 4, pp 675–692 | Cite as

Did fertility go up after the oklahoma city bombing? An analysis of births in metropolitan counties in Oklahoma, 1990–1999

  • Joseph Lee Rodgers
  • Craig A. St. John
  • Ronnie Coleman


Political and sociocultural events (e.g., Brown v. Board of Education in 1954 and the German reunification in 1989) and natural disasters (e.g., Hurricane Hugo in 1989) can affect fertility. In our research, we addressed the question of whether the Oklahoma City bombing in April 1995, a man-made disaster, influenced fertility patterns in Oklahoma. We defined three theoretical orientations—replacement theory, community influence theory, and terror management theory—that motivate a general expectation of birth increases, with different predictions emerging from time and geographic considerations. We used two different empirical methodologies. First, we fitted dummy-variable regression models to monthly birth data from 1990 to 1999 in metropolitan counties. We used birth counts to frame the problem and general fertility rates to address the problem formally. These analyses were organized within two design structures: a control-group interrupted time-series design and a difference-in-differences design. In these analyses, Oklahoma County showed an interpretable, consistent, and significant increase in births. Second, we used graphical smoothing models to display these effects visually. In combination, these methods provide compelling support for a fertility response to the Oklahoma City bombing. Certain parts of each theory helped us organize and understand the pattern of results.


Oklahoma City Metropolitan County Fertility Response Terror Management Theory Bombing Effect 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. “Baby Miniboom Following New York Terrorist Attack.” May 27, 2002. New York Daily News, p. 2B. “Baylee Almon’s Mom Expecting Another Child.” April 5, 2000. Daily Oklahoman, p. 4A.Google Scholar
  2. Becker, G.S. 1960. “An Economic Analysis of Fertility.” Pp. 209–31 in Demographic and Economic Change in Developed Countries. NBER Conference Series 11. Princeton, NJ: Princeton University Press.Google Scholar
  3. Bertrand, M., E. Duflo, and S. Mullainathan. 2004. “How Much Should We Trust Differences-in-Differences Estimates?” Quarterly Journal of Economics 119:249–75.CrossRefGoogle Scholar
  4. Bongaarts, J. and G. Feeney. 1998. “On the Quantum and Tempo of Fertility.” Population and Development Review 24:271–92.CrossRefGoogle Scholar
  5. Brunvand, J.H. 1993. The Baby Train and Other Lusty Urban Legends. New York: W.W. Norton.Google Scholar
  6. Cohan, S.L. and S.W. Cole. 2002. “Life Course Transitions and Natural Disasters: Marriage, Birth, and Divorce Following Hurricane Hugo.” Journal of Family Psychology 16:14–25.CrossRefGoogle Scholar
  7. Conrad, C., M. Lechner, and W. Werner. 1996. “East German Fertility After Unification: Crisis or Adaptation?” Population and Development Review 22:331–58.CrossRefGoogle Scholar
  8. Cook, T.D. and D.T. Campbell. 1979. Quasi-Experimentation: Design and Analysis Issues for Field Settings. Boston: Houghton-Mifflin.Google Scholar
  9. Cromwell, J.B., W.C. Labys, and M. Terraza. 1994. Univariate Tests for Time Series Models. Thousand Oaks, CA: Sage.Google Scholar
  10. Davis, K. 1963. “The Theory of Change and Response in Modern Demographic History.” Population Index 29:345–66.CrossRefGoogle Scholar
  11. Easterlin, R.A. 1978. “The Economics and Sociology of Fertility: A Synthesis.” Pp. 57–133 in Historical Studies of Changing Fertility, edited by C. Tilly. Princeton, NJ: Princeton University Press.Google Scholar
  12. Garrison, D. September 15, 2003. “September Poem.” New Yorker, pp. 68–69.Google Scholar
  13. Heckman, J., H. Ichimura, J. Smith, and P. Todd. 1998. “Characterizing Selection Bias Using Experimental Data.” Econometrica 66:1017–98.CrossRefGoogle Scholar
  14. Hirschman, C. 1994. “Why Fertility Changes.” Annual Review of Sociology 20:203–33.CrossRefGoogle Scholar
  15. Knodel, J. and E. van de Walle. 1979. “Lessons From the Past: Policy Implications of Historical Fertility Studies.” Population and Development Review 5:217–45.CrossRefGoogle Scholar
  16. Lam, D.A. and J. Miron. 1996. “The Effect of Temperature on Human Fertility.” Demography 33:291–306.CrossRefGoogle Scholar
  17. Lechner, M. 2001. “The Empirical Analysis of East German Fertility After Unification: An Update.” European Journal of Population 17:61–74.Google Scholar
  18. Lesthaeghe, R. 1983. “A Century of Demographic Change in Western Europe: An Exploration of Underlying Dimensions.” Population and Development Review 9:411–36.CrossRefGoogle Scholar
  19. Nakonezny, P., J.L. Rodgers, and P. Reddick. 2004. “Did Divorces Decline After the Oklahoma City Bombing?” Journal of Marriage and the Family 66:90–100.CrossRefGoogle Scholar
  20. “No Sign of Post-September 11 Baby Boom.” July 22, 2002. MSNBC Online.Google Scholar
  21. Notestein, F. 1945. “Population—The Long View.” Pp. 36–57 in Food for the World, edited by T.W. Schultz. Chicago: University of Chicago Press.Google Scholar
  22. Ostram, C.W. 1978. Time Series Analysis: Regression Techniques. Thousand Oaks, CA: Sage.Google Scholar
  23. Rindfuss, R.R., J.S. Reed, and C. St. John. 1978. “A Fertility Reaction to a Historical Event: Southern White Birthrates and the 1954 Desegregation Ruling.” Science 201:178–80.CrossRefGoogle Scholar
  24. Rodgers, J.L. and J.R. Udry. 1988. “The Season-of-Birth Paradox.” Social Biology 35:171–85.Google Scholar
  25. Seiver, D.A. 1985. “Trend and Variation in the Seasonality of U.S. Fertility.” Demography 22: 89–100.CrossRefGoogle Scholar
  26. Serrano, R. July 10, 1999. “Murrah Bomb’s Toll.” Oklahoma Observer, p. 1.Google Scholar
  27. Shadish, W.R., T.D. Cook, and D.T. Campbell. 2002. Experimental and Quasi-Experimental Designs for Generalized Causal Inference. Boston: Houghton-Mifflin.Google Scholar
  28. Solomon, S., J. Greenberg, and T. Pyszczynski. 2000. “Pride and Prejudice: Fear of Death and Social Behavior.” Current Directions in Psychological Research 9:200–204.CrossRefGoogle Scholar
  29. Udry, J.R. 1970. “The Effect of the Great Blackout of 1965 on Births in New York City.” Demography 7:325–27.CrossRefGoogle Scholar

Copyright information

© Population Association of America 2005

Authors and Affiliations

  • Joseph Lee Rodgers
    • 1
  • Craig A. St. John
    • 2
  • Ronnie Coleman
    • 1
  1. 1.Department of PsychologyUniversity of OklahomaNorman
  2. 2.Department of SociologyUniversity of OklahomaNormanUSA

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