The results of the preliminary analyses of self-reported data on antisocial behaviour from the Vietnam Era Veteran Twin Registry are given below. The subjects for the study were 3226 male twin pairs in which both members served in the military during the Vietnam era. Trait Antisocial behaviour Age 15 - 17 After the war Concordance MZ DZ 32 17 49 63 a. Only consider the concordance values for monozygotic (MZ) and dizygotic (DZ) twins for antisocial behaviour between the ages of 15 and 17. What does the data suggest in terms of the influence of genes and the environment on antisocial behaviour within this age group? b. Consider the concordance data for antisocial behaviour from both age 15 - 17 and after the war. Explain why is there a difference in the percentage of concordance between the different age groups in terms of the influence of genes and the environment?

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The results of the preliminary analyses of self-reported data on antisocial behaviour from the Vietnam Era Veteran Twin Registry are given below. The subjects for the study were 3226
male twin pairs in which both members served in the military during the Vietnam era.
Trait
Antisocial
behaviour
Concordance
MZ
DZ
Age 15 - 17
After the war
32
17
63
49
a. Only consider the concordance values for monozygotic (MZ) and dizygotic (DZ) twins for antisocial behaviour between the ages of 15 and 17. What does the data suggest in terms of
the influence of genes and the environment on antisocial behaviour within this age group?
b. Consider the concordance data for antisocial behaviour from both age 15 - 17 and after the war. Explain why is there a difference in the percentage of concordance between the
different age groups in terms of the influence of genes and the environment?
Transcribed Image Text:The results of the preliminary analyses of self-reported data on antisocial behaviour from the Vietnam Era Veteran Twin Registry are given below. The subjects for the study were 3226 male twin pairs in which both members served in the military during the Vietnam era. Trait Antisocial behaviour Concordance MZ DZ Age 15 - 17 After the war 32 17 63 49 a. Only consider the concordance values for monozygotic (MZ) and dizygotic (DZ) twins for antisocial behaviour between the ages of 15 and 17. What does the data suggest in terms of the influence of genes and the environment on antisocial behaviour within this age group? b. Consider the concordance data for antisocial behaviour from both age 15 - 17 and after the war. Explain why is there a difference in the percentage of concordance between the different age groups in terms of the influence of genes and the environment?
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