What is NOT a social risk factor associated with antisocial behavior in adults? School Experience Peer rejection Poverty An extra Chromosome 21
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These typically include factors that arise from social interactions and environments, such as school experiences, peer relationships, and socioeconomic status. Show more…
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James K.
Degree of antisocial behavior is a quantitative trait in human males. Avshalon Caspi and colleagues (2002) used data on several hundred men to investigate the relationship between antisocial behavior and two factors. The first factor was genotype at the locus that encodes the enzyme monoamine oxidase $A(M A O A) .$ MAOA acts in the brain, where it breaks down a variety of the neurotransmitters nerve cells use to communicate with each other. The gene for MAOA is located on the X chromosome. Due to genetic differences in the gene's promoter, some men have low MAOA activity and others have high MAOA activity. The second factor was the experience of maltreatment during childhood. Based on a variety of evidence, the researchers determined whether each man had experienced no maltreatment, probable maltreatment, or severe maltreatment. The data are summarized in Figure 9.34. a. Is the variation among men in antisocial behavior at least partly due to differences in genotype? Explain. b. Is the variation among men in antisocial behavior at least partly due to differences in environment? Explain. c. Do men with different genotypes respond the same way to changes in the environment? Explain. d. Is antisocial behavior heritable? Explain. e. Do these data influence your opinion about how men who exhibit antisocial behavior should be treated and/or punished?
Qudsiya A.
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