Yet another ethical dilemma to ponder...
Posted: Mon Aug 05, 2002 11:53 am
Very much in the news this past week was the publication in "Science" of the results of a long-term (since 1972) genetic study done in New Zealand. A major finding was that a single rare gene could account for nearly half of all criminally violent and anti-social behavior. Not ALL carriers of the gene became violent or anti-social; that seemed to occur primarily if they were themselves exposed to violence as children, which caused MOST of them to become violent or anti-social. Only a quarter of carriers who were not exposed to violence as children became violent offenders themselves as adults. Non-carriers of the gene were unlikely to become violent offenders regardless of childhood experiences - though their vast majority in the society still makes them responsible for about half.
The various "experts" and talking heads emphasized the cultural and behavioral triggers to adult violence and down-played the genetic component as far less relevant. That ONLY 85% of those males with the relevant gene and who experienced violence in their own childhood became violent was taken as evidence that we should emphasize the environmental component, rather than the genetic.
On the other hand, eliminating this relatively rare gene from the population could possibly eliminate nearly half of all violent crime. Admittedly, it is impossible to eliminate any gene completely (because of new mutations), but its frequency could be dramatically reduced in only a generation or two.
The gene for low monoamine oxidase-A production (low MAO-A) is "X-linked," which means that males carry only one copy, inherited from their mothers, and females carry two copies, one from each parent. The gene is "recessive" in that females require BOTH of their copies to be the low MAO-A version for it to have any effect in producing violent behavior.
This gives a solid reason other than "testosterone poisoning" for the much higher level of violence among males.
The ethical question is, "What should we, as a society, do about this knowledge?" Richard Lynn, in his book "Eugenics: A Reassessment" (London: Praeger, 2001), notes that western democracies are very reluctant to embrace anything that hints of eugenic planning, but that some countries, such as China, have no qualms about implementing its ideas. He argues that within the near future China is likely to implement plans to increase the national I.Q. through well-known eugenic means and may work toward other eugenic goals as well. Polls show a very large majority of the Chinese medical establishment in favor of it. As high as 100% support for some eugenic measures (pp. 294-95). Support in the U.S. was the second lowest of all the countries surveyed - only Canada was lower, with some proposals for genetic counseling receiving only a 9% favorable response. If other countries successfully implement eugenic strategies and we do not, in a world where human capital is important we might quickly get left behind.
Preventing or limiting the reproduction of those people who are carriers of the low MAO-A gene could dramatically cut the incidence of violent crime and anti-social behavior in a single generation.
The quickest and most efficient way to reduce violence would be to permanently sterilize ALL carriers of the gene. Males with the gene pass it on to ALL of their daughters. Females with the gene pass it on to half of their sons (who are then prone to violence) and half of their daughters, who then pass it on to half of the next generation. Females who receive the gene from both their mothers and their fathers are prone to violence and pass the gene to ALL of their children.
Sterilization could be vasectomy and tubal ligation stopping reproduction without other effects. Since we know well from animal analogues that testosterone is ALSO a factor in male violence, and these are already violence-prone males if they are carriers of the gene, should all of the male carriers be castrated at an early age? This would stop the passing on of the gene AND should reduce violent behavior in the existing population.
Here we go again! Ethics as a combat sport! Have at it, but try to be logical and flame no one.
Jesus, your friendly Archive spear-catcher
The various "experts" and talking heads emphasized the cultural and behavioral triggers to adult violence and down-played the genetic component as far less relevant. That ONLY 85% of those males with the relevant gene and who experienced violence in their own childhood became violent was taken as evidence that we should emphasize the environmental component, rather than the genetic.
On the other hand, eliminating this relatively rare gene from the population could possibly eliminate nearly half of all violent crime. Admittedly, it is impossible to eliminate any gene completely (because of new mutations), but its frequency could be dramatically reduced in only a generation or two.
The gene for low monoamine oxidase-A production (low MAO-A) is "X-linked," which means that males carry only one copy, inherited from their mothers, and females carry two copies, one from each parent. The gene is "recessive" in that females require BOTH of their copies to be the low MAO-A version for it to have any effect in producing violent behavior.
This gives a solid reason other than "testosterone poisoning" for the much higher level of violence among males.
The ethical question is, "What should we, as a society, do about this knowledge?" Richard Lynn, in his book "Eugenics: A Reassessment" (London: Praeger, 2001), notes that western democracies are very reluctant to embrace anything that hints of eugenic planning, but that some countries, such as China, have no qualms about implementing its ideas. He argues that within the near future China is likely to implement plans to increase the national I.Q. through well-known eugenic means and may work toward other eugenic goals as well. Polls show a very large majority of the Chinese medical establishment in favor of it. As high as 100% support for some eugenic measures (pp. 294-95). Support in the U.S. was the second lowest of all the countries surveyed - only Canada was lower, with some proposals for genetic counseling receiving only a 9% favorable response. If other countries successfully implement eugenic strategies and we do not, in a world where human capital is important we might quickly get left behind.
Preventing or limiting the reproduction of those people who are carriers of the low MAO-A gene could dramatically cut the incidence of violent crime and anti-social behavior in a single generation.
The quickest and most efficient way to reduce violence would be to permanently sterilize ALL carriers of the gene. Males with the gene pass it on to ALL of their daughters. Females with the gene pass it on to half of their sons (who are then prone to violence) and half of their daughters, who then pass it on to half of the next generation. Females who receive the gene from both their mothers and their fathers are prone to violence and pass the gene to ALL of their children.
Sterilization could be vasectomy and tubal ligation stopping reproduction without other effects. Since we know well from animal analogues that testosterone is ALSO a factor in male violence, and these are already violence-prone males if they are carriers of the gene, should all of the male carriers be castrated at an early age? This would stop the passing on of the gene AND should reduce violent behavior in the existing population.
Here we go again! Ethics as a combat sport! Have at it, but try to be logical and flame no one.
Jesus, your friendly Archive spear-catcher