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Killing the competition

Female/female and male/male homicide

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Abstract

Sex- and age-specific rates of killing unrelated persons of one’s own sex were computed for Canada (1974–1983), England/Wales (1977–1986), Chicago (1965–1981), and Detroit (1972) from census information and data archives of all homicides known to police. Patterns in relation to sex and age were virtually identical among the four samples, although the rates varied enormously (from 3.7 per million citizens per annum in England/Wales to 216.3 in Detroit). Men’s marital status was related to the probability of committing a same-sex, nonrelative homicide, but age effects remained conspicuous when married and unmarried men were distinguished.

These findings and the treatment of age and sex effects by criminologists are discussed in the light of contemporary evolutionary psychological models of sex differences and life-span development. Same-sex homicides in which killer and victim are unrelated can be interpreted as an assay of competitive conflict. In every human society for which relevant information exists, men kill one another vastly more often than do women. Lethal interpersonal competition is especially prevalent among young men, which accords with many other aspects of life-span development in suggesting that sexual selection has maximized male competitive prowess and inclination in young adulthood.

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References

  • Adler, F. 1975Sisters in Crime. New York: McGraw-Hill.

    Google Scholar 

  • Alexander, R.D. 1971 The Search for an Evolutionary Philosophy of Man.Proceedings of the Royal Society of Victoria 84:99–120.

    Google Scholar 

  • 1979Darwinism and Human Affairs. Seattle: University of Washington Press.

    Google Scholar 

  • 1987The Biology of Moral Systems. Hawthorne, New York: Aldine de Gruyter.

    Google Scholar 

  • Alexander, R.D., J.L. Hoogland, R.D. Howard, K.M. Noonan, and P.W. Sherman 1979 Sexual Dimorphisms and Breeding Systems in Pinnipeds, Ungulates, Primates and Humans. InEvolutionary Biology and Human Social Behavior, N.A. Chagnon and W. Irons, eds. Pp. 402–435. North Scituate, Massachusetts: Duxbury.

    Google Scholar 

  • Baldwin, J.D. 1984 Thrill and Adventure Seeking and the Age Distribution of Crime: Comment on Hirschi and Gottfredson.American Journal of Sociology 90:1326–1330.

    Google Scholar 

  • Beattie, J.H.M. 1960 Homicide and Suicide in Bunyoro. InAfrican Homicide and Suicide, P. Bohannan, ed. Pp. 130–153. Princeton: Princeton University Press.

    Google Scholar 

  • Block, C.R. 1987Homicide in Chicago. Chicago: Loyola University.

    Google Scholar 

  • Block, R. 1975 Homicide in Chicago: A Nine-Year Study (1965–1973).Journal of Criminal Law and Criminology 66:496–510.

    Google Scholar 

  • Bohannan, P. 1960a. Homicide and Suicide in North Kavirondo. InAfrican Homicide and Suicide. P. Bohannan, ed. Pp. 154–178. Princeton: Princeton University Press.

    Google Scholar 

  • 1960b Homicide among the Tiv of Central Nigeria. InAfrican Homicide and Suicide. P. Bohannan, ed. Pp. 30–64. Princeton: Princeton University Press.

    Google Scholar 

  • Brown, I.D., and J.A. Groeger 1988 Risk Perception and Decision Taking During the Transition between Novice and Experienced Driver Status.Ergonomics 31:585–597.

    Google Scholar 

  • Browne, A. 1987When Battered Women Kill. New York: Free Press.

    Google Scholar 

  • Burrowes, K.L., R.E. Hales, and E. Arrington 1988 Research on the Biologic Aspects of Violence.Psychiatric Clinics of North America 11:499–509.

    Google Scholar 

  • Chagnon, N.A. 1988 Life Histories, Blood Revenge, and Warfare in a Tribal Population.Science 239:985–992.

    Google Scholar 

  • Clutton-Brock, T.H., ed. 1988Reproductive Success. Chicago: University of Chicago Press.

    Google Scholar 

  • Clutton-Brock, T.H., F.E. Guinness, and S.D. Albon 1982Red Deer. Chicago: University of Chicago Press.

    Google Scholar 

  • Cohen, L.E., and K.C. Land 1987 Age Structure and Crime: Symmetry versus Asymmetry and the Projection of Crime Rates Through the 1990s.American Sociological Review 52:170–183.

    Google Scholar 

  • Cohen, L.E., and R. Machalek 1988 A General Theory of Expropriative Crime: An Evolutionary Ecological Approach.American Journal of Sociology 94:465–501.

    Google Scholar 

  • Colwell, M.A., and L. W. Oring 1988 Wing Fluttering Display by Incubating Male Wilson’s Phalaropes.Canadian Journal of Zoology 66:2315–2317.

    Google Scholar 

  • Cosmides, L. 1989 The Logic of Social Exchange: Has Natural Selection Shaped How Humans Reason? Studies with the Wason Selection Task.Cognition 31:187–276.

    Google Scholar 

  • Cosmides, L., and J. Tooby 1987 From Evolution to Behavior: Evolutionary Psychology as the Missing Link. InThe Latest on the Best. J. Dupre, ed. Pp. 277–306. Cambridge, Massachusetts: MIT Press.

    Google Scholar 

  • 1989 Evolutionary Psychology and the Generation of Culture, Part II. Case Study: A Computational Theory of Social Exchange.Ethology and Sociobiology 10:51–97.

    Google Scholar 

  • Curtis, L.A. 1974Criminal Violence. Lexington, Massachusetts: Lexington Books.

    Google Scholar 

  • Daly, M., and M. Wilson 1982 Homicide and Kinship.American Anthropologist 84:372–378.

    Google Scholar 

  • 1983Sex, Evolution and Behavior. Belmont, California: Wadsworth.

    Google Scholar 

  • 1988aHomicide. Hawthorne, New York: Aldine de Gruyter.

    Google Scholar 

  • 1988b Evolutionary Social Psychology and Family Homicide.Science 242:519–524.

    Google Scholar 

  • 1989 Homicide and Cultural Evolution.Ethology and Sociobiology 10:99–110.

    Google Scholar 

  • Deaux, K. 1985 Sex and Gender.Annual Review of Psychology 36:49–81.

    Google Scholar 

  • Dylan, B. 1965 “Like a Rolling Stone.” Warner Brothers Music.

  • Eagley, A.H., and V.J. Steffen 1986 Gender and Aggressive Behavior: A Meta-analytic Review of the Social Psychological Literature.Psychological Bulletin 100:309–330.

    Google Scholar 

  • Easterlin, R.A. 1980Birth and Fortune. New York: Basic Books.

    Google Scholar 

  • Elwin, V. 1950Maria Murder and Suicide, second edition. Bombay: Oxford University Press.

    Google Scholar 

  • Emlen, S.T., and L.W. Oring 1977 Ecology, Sexual Selection, and the Evolution of Mating Systems.Science 197:215–223.

    Google Scholar 

  • Fallers, L.A., and M.C. Fallers 1960 Homicide and Suicide in Busoga. InAfrican Homicide and Suicide, P. Bohannan, ed. Pp. 65–93. Princeton: Princeton University Press.

    Google Scholar 

  • Finn, P., and B.W.E. Bragg 1986 Perception of the Risk of an Accident by Young and Older Drivers.Accident Analysis and Prevention 18:289–298.

    Google Scholar 

  • Fishbain, D.A., J.R. Fletcher, T.E. Aldrich, and J.H. Davis 1987 Relationship between Russian Roulette Deaths and Risk-Taking Behavior: A Controlled Study.American Journal of Psychiatry 144:563–567.

    Google Scholar 

  • Flinn, M.V., and B.S. Low 1986 Resource Distribution, Social Competition, and Mating Patterns in Human Societies. InEcological Aspects of Social Evolution, D.I. Rubenstein and R.W. Wrangham, eds. Pp. 217–243. Princeton: Princeton University Press.

    Google Scholar 

  • Gillies, H. 1976 Homicide in the West of Scotland.British Journal of Psychiatry 128:105–127.

    Google Scholar 

  • Gove W.R. 1985 The Effect of Age and Gender on Deviant Behavior: A Biopsychological Perspective. InGender and the Life Course, A.S. Rossi, ed. Pp. 115–144. New York: Aldine.

    Google Scholar 

  • Hagan, J. 1986 The Unexplained Crimes of Class and Gender. InCritique and Explanation, T.F. Hartnagel and R.A. Silverman, eds. Pp. 71–90. New Brunswick, New Jersey: Transaction Books.

    Google Scholar 

  • Hamilton, W.D. 1964 The Genetical Evolution of Social Behaviour.Journal of Theoretical Biology 7:1–52.

    Google Scholar 

  • 1979 Wingless and Fighting Males in Fig Wasps and Other Insects. InSexual Selection and Reproductive Competition in Insects, M.S. Blum and N.A. Blum, eds. Pp. 167–220. London: Academic Press.

    Google Scholar 

  • Hansen, J.P.H., and O. Bjarnason 1974 Homicide in Iceland, 1946–1970.Forensic Science 4:107–117.

    Google Scholar 

  • Hewlett, B.S. 1988 Sexual Selection and Paternal Investment among Aka Pygmies. InHuman Reproductive Behaviour, L. Betzig, M. Borgerhoff Mulder, and P. Turke, eds. Pp. 263–276. Cambridge: Cambridge University Press.

    Google Scholar 

  • Hirschi, T., and M. Gottfredson 1983 Age and the Explanation of Crime.American Journal of Sociology 89:552–584.

    Google Scholar 

  • 1986 The Distinction between Crime and Criminality. InCritique and Explanation, T.F. Hartnagel and R.A. Silverman, eds. Pp. 55–70. New Brunswick, New Jersey: Transaction Books.

    Google Scholar 

  • Holinger, P.C. 1987Violent Deaths in the United States. New York: Guilford Press.

    Google Scholar 

  • Jackson, T.T., and M. Gray 1976 Field Study of Risk-Taking Behavior of Automobile Drivers.Perceptual and Motor Skills 43:471–474.

    Google Scholar 

  • Jonah, B.A. 1986 Accident Risk and Risk-Taking Behaviour among Young Drivers.Accident Analysis and Prevention 18:255–271.

    Google Scholar 

  • Jones, A. 1980Women Who Kill. New York: Holt, Rinehart & Winston.

    Google Scholar 

  • Kahneman, D., P. Slovic, and A. Tversky, eds. 1982Judgment under Uncertainty. New York: Cambridge University Press.

    Google Scholar 

  • Kandel, D.B. 1980 Drug and Drinking Behavior among Youth.Annual Review of Sociology 6:235–285.

    Google Scholar 

  • Klama, J. 1988Aggression: The Myth of the Beast Within. New York: Wiley.

    Google Scholar 

  • LaFontaine, J.S. 1960 Homicide and Suicide among the Gisu. InAfrican Homicide and Suicide, P. Bohannan, ed. Pp. 94–129. Princeton: Princeton University Press.

    Google Scholar 

  • Lee, R.B. 1979The !Kung San: Men, Women, and Work in a Foraging Society. Cambridge: Cambridge University Press.

    Google Scholar 

  • Lopes, L.L. 1987 Between Hope and Fear: The Psychology of Risk.Advances in Experimental Social Psychology 20:255–295.

    Google Scholar 

  • Maccoby, E.E., and C.N. Jacklin 1974The Psychology of Sex Differences. Palo Alto: Stanford University Press.

    Google Scholar 

  • 1980 Sex Differences in Aggression: A Rejoinder and Reprise.Child Development 51:964–980.

    Google Scholar 

  • Matthews, M.L., and A.R. Moran 1986 Age Differences in Male Drivers’ Perception of Accident Risk: The Role of Perceived Driving Ability.Accident Analysis and Prevention 18:299–313.

    Google Scholar 

  • Maxson, S.J., and L.W. Oring 1980 Breeding Season Time and Energy Budgets of the Polyandrous Spotted Sandpiper.Behaviour 74:200–263.

    Google Scholar 

  • Maynard Smith, J. 1974 The Theory of Games and the Evolution of Animal Conflict.Journal of Theoretical Biology 47:209–222.

    Google Scholar 

  • Maynard Smith, J., and G.R. Price 1973 The Logic of Animal Conflict.Nature (London) 246:15–18.

    Google Scholar 

  • McComas, A.J., R.E.P. Sica, and F. Petito 1973 Muscle Strength in Boys of Different Ages.Journal of Neurology, Neurosurgery and Psychiatry 36:171–173.

    Google Scholar 

  • Mead, M. 1935.Sex and Temperament in Three Primitive Societies. New York: Morrow.

    Google Scholar 

  • Mednick, S.A., V. Pollock, J. Volavka, and W.F. Gabrielli 1982 Biology and Violence. InCriminal Violence, M.E. Wolfgang and N.A. Weiner, eds. Pp. 21–80. Beverly Hills: Sage.

    Google Scholar 

  • Mock, D.W. 1987 Siblicide, Parent-Offspring Conflict, and Unequal Parental Investment by Egrets and Herons.Behavioral Ecology and Sociobiology 20:247–256.

    Google Scholar 

  • Moore R.J. 1972 Canadian Adolescents and the Challenge to Demonstrate Competence at Personal Physical Risk.Adolescence 7:245–264.

    Google Scholar 

  • Murray, M.P., E.H. Duthie, S.R. Gambert, S.B. Sepic, and L.A. Mollinger 1985 Age-related Differences in Knee Muscle Strength in Normal Women.Journal of Gerontology 40:275–280.

    Google Scholar 

  • Nash, J. 1967 Death as a Way of Life: The Increasing Resort to Homicide in a Maya Indian Community.American Anthropologist 69:455–470.

    Google Scholar 

  • Nisbett, R., and L. Ross 1980Human Inference: Strategies and Shortcomings of Social Judgment. Englewood Cliffs, New Jersey: Prentice-Hall.

    Google Scholar 

  • O’Connor, R.J. 1978 Brood Reduction in Birds: Selection for Fratricide, Infanticide, and Suicide?Animal Behaviour 26:79–96.

    Google Scholar 

  • Parker, G.A. 1974 Assessment Strategy and the Evolution of Animal Conflicts.Journal of Theoretical Biology 47:223–243.

    Google Scholar 

  • Popp, J.L., and I. DeVore 1979 Aggressive Competition and Social Dominance Theory. InThe Great Apes, D.A. Hamburg and E.R. McCown, eds. Pp. 317–338. Menlo Park, California: Benjamin/Cummings.

    Google Scholar 

  • Real, L., and T. Caraco 1986 Risk and Foraging in Stochastic Environments.Annual Review of Ecology and Systematics 17:371–390.

    Google Scholar 

  • Rohwer, S. 1982 The Evolution of Reliable and Unreliable Badges of Fighting Ability.American Zoologist 22:531–546.

    Google Scholar 

  • Rothe, J.P. 1987Rethinking Young Drivers. North Vancouver: Insurance Corporation of British Columbia.

    Google Scholar 

  • Rubin, P.H., and C.W. Paul 1979 An Evolutionary Model of Taste for Risk.Economic Inquiry 17:585–596.

    Google Scholar 

  • Saran, A.B. 1974Murder and Suicide among the Munda and the Oraon. Delhi: National Publishing House.

    Google Scholar 

  • Shephard, R.J. 1986Fitness of a Nation. Basel: Karger.

    Google Scholar 

  • Slovic, P. 1987 Perception of Risk.Science 236:280–285.

    Google Scholar 

  • Southall, A.W. 1960 Homicide and Suicide among the Alur. InAfrican Homicide and Suicide, P. Bohannan, ed. Pp. 214–229. Princeton: Princeton University Press.

    Google Scholar 

  • Steffensmeier, D.J., and E.A. Allan 1988 Sex Disparities in Arrests by Residence, Race, and Age: An Assessment of the Gender Convergence/Crime Hypothesis.Justice Quarterly 5:53–80.

    Google Scholar 

  • Steffensmeier D.J., E.A. Allan, M.D. Harer, and C. Streifel 1989 Age and the Distribution of Crime.American Journal of Sociology 94:803–831.

    Google Scholar 

  • Stephens, M.L. 1982 Mate Takeover and Possible Infanticide by a Female Northern Jaçana (Jacana spinosa).Animal Behaviour 30:1253–1254.

    Google Scholar 

  • Symons, D. 1979The Evolution of Human Sexuality. New York: Oxford University Press.

    Google Scholar 

  • 1987. If We’re all Darwinians, What’s the Fuss About? InSociobiology and Psychology, C. Crawford, M. Smith, and D. Krebs, eds. Pp. 121–146. Hillsdale NJ: Erlbaum.

    Google Scholar 

  • Thomas, J.R., and K.E. French 1985 Gender Differences across Age in Motor Performance: A Meta-analysis.Psychological Bulletin 98:260–282.

    Google Scholar 

  • Tieger, T. 1980 On the Biological Basis of Sex Differences in Aggression.Child Development 51:943–963.

    Google Scholar 

  • Tittle, C.R. 1988 Two Empirical Regularities (Maybe) in Search of an Explanation: Commentary on the Age/Crime Debate.Criminology 26:75–85.

    Google Scholar 

  • Tonkin, R.S. 1987 Adolescent Risk-Taking Behavior.Journal of Adolescent Health Care 8:213–220.

    Google Scholar 

  • Tooby, J., and L. Cosmides 1989 Evolutionary Psychology and the Generation of Culture, Part I: Theoretical Considerations.Ethnology and Sociobiology 10:29–49.

    Google Scholar 

  • Tooby, J., and I. DeVore 1987 The Reconstruction of Hominid Behavioral Evolution through Strategic Modeling. InThe Evolution of Human Behavior: Primate Models, W.G. Kinzey, ed. Pp. 183–237. Albany: State University of New York Press.

    Google Scholar 

  • Totman, J. 1978The Murderess. San Francisco: R & E Research Associates.

    Google Scholar 

  • Trivers, R.L. 1972 Parental Investment and Sexual Selection. InSexual Selection and the Descent of Man, 1871–1971, B. Campbell, ed. Pp. 136–179. Chicago: Aldine.

    Google Scholar 

  • Varma, S.C. 1978The Bhil Kills. Delhi: Kunj Publishing House.

    Google Scholar 

  • Wilbanks, W. 1984Murder in Miami. Lanham, Maryland: University Press of America.

    Google Scholar 

  • Williams, G.C. 1966.Adaptation and Natural Selection. Princeton: Princeton University Press.

    Google Scholar 

  • Wilson, G.M. 1960 Homicide and Suicide among the Joluo of Kenya. InAfrican Homicide and Suicide, P. Bohannan, ed. Pp. 179–213. Princeton: Princeton University Press.

    Google Scholar 

  • Wilson, J.Q., and R.J. Herrnstein 1985Crime and Human Nature. New York: Simon & Schuster.

    Google Scholar 

  • Wilson, M., and M. Daly 1985 Competitiveness, Risk-Taking and Violence: The Young Male Syndrome.Ethology and Sociobiology 6:59–73.

    Google Scholar 

  • Wolfgang, M.E. 1978 Family Violence and Criminal Behavior. InViolence and Responsibility, R.L. Sadoff, ed. Pp. 87–104. New York: Spectrum.

    Google Scholar 

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  1. Department of Psychology, McMaster University, L8S 4K1, Hamilton, Ontario, Canada

    Martin Daly & Margo Wilson

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  1. Martin Daly
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  2. Margo Wilson
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Martin Daly and Margo Wilson collaborate in research on the evolutionary psychology of human conflict, and in field research in mammalian behavioral ecology. They are the authors ofSex, Evolution and Behavior (Wadsworth: second edition, 1983) andHomicide (Aldine de Gruyter: 1988).

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Daly, M., Wilson, M. Killing the competition. Human Nature 1, 81–107 (1990). https://doi.org/10.1007/BF02692147

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