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Originally Posted by PoorOldPo
Everyone is an immigrant from somewhere so.....I don't agree.
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Try this out:
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The personality trait of novelty seeking (NS) has been associated with the long variant of the dopamine D4 receptor (L-DRD4) VNTR polymorphism.... ANOVAs showed that L-DRD4 individuals had higher NS, made more risky choices and won less money in the decision making task, but had intact planning for problem solving. They also had reduced startle reactivity and late startle modulation by both pleasant and unpleasant pictures. Early, attentional startle modulation by the affective pictures was intact. NS correlated negatively with startle reactivity and performance in the emotional decision task. These results suggest that the L-DRD4 polymorphism is associated with high NS and risk taking, under-reactivity to unconditioned aversive stimuli, constricted emotional responses but preserved attentional processing of emotional stimuli and efficient problem solving. These results extend animal evidence on DRD4-mediated control of decision making and emotional processing to humans. The proposed role of the NS phenotype in human evolution and in disorders of impulsivity is discussed under the light of the present findings.
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The 7-repeat allele was the second most common (global mean = 20.6%), appearing quite frequently in the Americas (mean frequency = 48.3%) but only occasionally in East and South Asia (mean frequency = 1.9%).
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the DRD4 7R allele originated as a rare mutational event (or events) that nevertheless increased to high frequency in human populations by positive selection.
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Originally Posted by Unknown Soldier
I think what HHBH is trying to imply, is that the USA is made up of immigrants from literally everywhere and most of those would've come from the lower levels of society from the country where they came from, hence violence and risky behaviour wasn't anything new to them.
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Nope. I'm referring to the descendents of White, European immigrants during the settling period, meaning those who came during the 20th century (the stimuli/impetus for coming to the US changed drastically after this period) & how this resulted in different frequency of certain genetic traits as opposed to those in the old country.
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Regardless of the ultimate details, is it reasonable to think that a single gene variation can modify human behavior yet be shaped by cultural diversity? We argue that just such single-gene changes regulating complex social behavior have been identified in other social organisms (Krieger and Ross 2002). We see no reason to think humans should be exempt from similar Darwinian selection (Darwin 1871). The evolutionary payoff of an individual’s behavior in complex human societies, obviously, will depend strongly on the reaction of others to that behavior (Betzig 1993; Buss 1999; Ding et al. 2002; Harpending and Cochran 2002; Fehr and Fischbacher 2003). We suggest the exciting possibility that the DRD4 locus is a prime candidate for investigating such gene and culture interactions.
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we suggest entertaining the possibility that predisposing alleles in fact are under positive selection and only result in deleterious effects when combined with other environmental/genetic factors. In this context, it is possible that prior selective constraints are no longer operating on this gene. It is possible also to speculate, however, that the very traits that may be selected for in individuals possessing a DRD4 7R allele may predispose behaviors that are deemed inappropriate in the typical classroom setting and hence diagnosed as ADHD.
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....the point being, white americans tend to be more violent than their European counterparts because prior to the 20th century the culture & socio-economic system of the country made it so these traits paid off more.
This is my best guess as to why this country is more violent than other nations with similar levels of economic development.
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Originally Posted by Hermione
Why the **** are we talking about immigrants? Are we forgetting that most of these crazy massacres have been committed by privileged WHITE MEN??? Does that really gall you hhbh? I bet it bloody does.
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No, it doesn't. The point you're making is not a new one, & the over representation of white males in such incidents has been pointed out by, among others, Jared Taylor.