Adult Dizygotic Twins

Adult Dizygotic Twins

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Twin studies have long been used to disentangle the role of genetic and environmental factors in the aetiology of psychiatric disorders. However, the validity of the twin method depends on the equal environment assumption--that monozygotic MZ and dizygotic DZ twins are equally correlated in their exposure to environmental factors of aetiological importance for the disorder under study.



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The present study compared bereavement responses of monozygotic MZ and dizygotic DZ adolescent and adult twins following the loss of their co-twins. A subset of twins completed the Grief Experience Inventory using a retrospective time frame, while a second subset completed it using a current time frame.

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Twin studies reveal the importance of environmental and genetic influences for traits, phenotypes , and disorders. Twin research is considered a key tool in behavioral genetics and in content fields, from biology to psychology.



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Adult Dizygotic Twins

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Adult Dizygotic Twins

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Adult Dizygotic Twins

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