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Questions tagged [twin-study]

For questions about twin study methodology, and research relying on such methodology.

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Do twin studies overestimate heritability?

Do twin studies overestimate heritability (for instance by putting the interaction between environment and genome under the label "heritable")? If so why? Would you have any research papers to point ...
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Does this recent twin study contradict Anders Erricson's view on the hereditary basis of talent?

The Swedish Psychologist Anders Erricson has published many reports stating that talent is "made and not born". In his book 'The Cambridge Handbook of Expertise and Expert Performance', he has stated ...
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How similar are the brains of twins?

I am currently reading undergraduate essays on biological dysfunction and schizophrenia. The students put a lot of weight in the fact that studies of monozygotic twins show only a 50% rate of ...
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What is the concordance rate for schizophrenia in monozygotic and dizygotic twins?

What is general level of concordance for twins and is it higher for monozygotic twins? What research is available on this?
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How much information on the “Identical Strangers” experiment was actually released?

I am in the process of researching the Nature vs. Nurture debate. While I was searching for articles on it, I discovered something known as the "Identical Strangers" experiment (that probably was ...