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biological risk factors- criminal psychology

biological risk factors- criminal psychology - Biology...

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Biology Factors BIOPSYCHOLOGISTS Examine the genetic and neurophysiological variables that play a part in criminal behavior Social environment is just as important BIOLOGICAL FACTORS Hypothalamus o In the limbic system of the mid-brain o A complex little structure o There are many nuclei of the hypothalamus o When some of those nuclei are destroyed, the result is a calmer response while the destruction of other nuclei result in higher levels of aggression Amygdala o In the limbic system of the mid-brain o Damage to the amygdala causes people not to respond in angry ways Things that did and should anger them do not o If there’s electrical stimulation to the amygdala, there is an increase of aggression These damage and stimulation studies give us some clues as to which areas of the brain are responsible for aggressive behaviors. Are criminal behaviors inherited? Friday February 11 GENETIC TRANSMISSION Cesare Lombroso (1835-1909), an Italian physician and the father of modern criminality o Very influential o Said that criminals had different genetic differences than regular people Prominent jaw bones Handle-shaped ears High cheek bones Protruding lips Large foreheads Etc. o Lombroso’s appearance findings were discredited. o There is still some talk about some differences in development. o Speculated that there may be a gene inherited for criminal behavior Genes are just codes. They react with one another and the environment. It’s possible that one may inherit a biological system that affects the way he/she responds to the environment stimuli.
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Cell<chromosomes<DNA<genes Polygenetic-environmental explanation Minor Physical Anomolies (MPAs) o For example, webbed toes o Seem to be markers for some dysfunction during the fetus neural development Especially boys o There is a relationship between having increases minor physical anomalies and aggressive/criminal behavior.
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