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- Twin_study abstract "Twin studies reveal the absolute and relative importance of environmental and genetic influences on individuals in a sample. Twin research is considered a key tool in behavioral genetics and in content fields, from biology to psychology. Twin studies are part of the methods used in behavior genetics, which includes all data that are genetically informative – siblings, adoptees, pedigree data etc.Twins are a valuable source for observation because they allow the study of varying family environments (across pairs) and widely differing genetic makeup: "identical" or monozygotic (MZ) twins, share nearly 100% of their genes, which means that most differences between the twins (such as height, susceptibility to boredom, intelligence, depression, etc.) is due to experiences that one twin has but not the other twin. "Fraternal" or dizygotic (DZ) twins share only about 50% of their genes. Thus powerful tests of the effects of genes can be made. Twins share many aspects of their environment (e.g., uterine environment, parenting style, education, wealth, culture, community) by virtue of being born in the same time and place. The presence of a given genetic trait in only one member of a pair of identical twins (called discordance) provides a powerful window into environmental effects.The classical twin design compares the similarity of monozygotic (identical) and dizygotic (fraternal) twins. If identical twins are considerably more similar than fraternal twins (which is found for most traits), this implicates that genes play an important role in these traits. By comparing many hundreds of families of twins, researchers can then understand more about the roles of genetic effects, shared environment, and unique environment in shaping behavior.Modern twin studies have shown that almost all traits are in part influenced by genetic differences, with some characteristics showing a strong influence (e.g. height), others an intermediate level (e.g. intelligence quotient) and some more complex heritabilities, with evidence for different genes affecting different aspects of the trait — as in the case of autism.".
- Twin_study thumbnail Francis_Galton.jpg?width=300.
- Twin_study wikiPageExternalLink doku.php?id=workshop:start.
- Twin_study wikiPageExternalLink SB10001424052702303552104577436333754014866.html.
- Twin_study wikiPageExternalLink www.apa.org.
- Twin_study wikiPageExternalLink psyccritiques.
- Twin_study wikiPageExternalLink query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=12866384.
- Twin_study wikiPageExternalLink query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=12866385.
- Twin_study wikiPageExternalLink 71.pdf.
- Twin_study wikiPageExternalLink 81.pdf.
- Twin_study wikiPageID "167202".
- Twin_study wikiPageRevisionID "601160502".
- Twin_study hasPhotoCollection Twin_study.
- Twin_study subject Category:Twin_studies.
- Twin_study comment "Twin studies reveal the absolute and relative importance of environmental and genetic influences on individuals in a sample. Twin research is considered a key tool in behavioral genetics and in content fields, from biology to psychology.".
- Twin_study label "Twin study".
- Twin_study label "Zwillingsforschung".
- Twin_study label "Étude de jumeaux".
- Twin_study sameAs Zwillingsforschung.
- Twin_study sameAs Étude_de_jumeaux.
- Twin_study sameAs m.016bk0.
- Twin_study sameAs Q244775.
- Twin_study sameAs Q244775.
- Twin_study wasDerivedFrom Twin_study?oldid=601160502.
- Twin_study depiction Francis_Galton.jpg.
- Twin_study isPrimaryTopicOf Twin_study.
