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Decades of research have demonstrated that both genetic and environmental factors play a role in a variety of behaviors in humans and animals (e.g. Grigorenko & Sternberg, 2003). The genetic basis of aggression, however, remains poorly understood. Aggression is a multi-dimensional concept, but it can be generally defined as behavior that ...
Studies of human behavior genetics have generally found behavioral traits such as creativity, extroversion, aggressiveness, and IQ have high heritability. The researchers who carry out those studies are careful to point out that heritability does not constrain the influence that environmental or cultural factors may have on those traits.
He lists a variety of aggression categories, each separately subject to natural selection, and states that aggressive behavior is, genetically, one of the most labile of all traits. He maintains that aggression is a technique used to gain control over necessary resources, and serves as a "density-dependent factor" in population control. He ...
Other transcription factors that have been known to respond to social factors include some factors broadly related to the neurobiology of threat including NF-κB (which, in addition to CREB, is a widely implicated transcription factor affecting pro-inflammatory gene expression), cyclic adenosine monophosphate , glucocorticoids (in particular ...
The presence of the genetic profile is not determinative, although it increases the likelihood of delinquency in cases where other factors are present. Ferguson stated, 'a large percentage of our behaviour in terms of violence or aggression is influenced by our biology - our genes - and our brain anatomy.' [ 4 ] Schnupp stated, 'To call these ...
In nearly all species, there is an obvious disequilibrium between frequency and severity of aggression in males versus females. [32] Males are almost always the more aggressive sex and there are genetic differences that back up this observation. A common explanation for this phenomenon is the higher testosterone levels in males. Testosterone ...
Human behaviour genetics is an interdisciplinary subfield of behaviour genetics that studies the role of genetic and environmental influences on human behaviour. Classically, human behavioural geneticists have studied the inheritance of behavioural traits.
The start of behaviour genetics as a well-identified field was marked by the publication in 1960 of the book Behavior Genetics by John L. Fuller and William Robert (Bob) Thompson. [ 1 ] [ 10 ] It is widely accepted now that many if not most behaviours in animals and humans are under significant genetic influence, although the extent of genetic ...