Twin and Adoption Studies
Watch this video about twin studies. Although researchers are working to expand and develop twin study designs and statistical methods, the assumptions made in many twin studies are being questioned. However, many researchers agree that twin studies will continue to be an important tool, alongside emerging genome and molecular research methods, in shedding light on human behavioral genetics.
Source: Khan Academy, https://www.youtube.com/watch?v=7RGdLoccgqA
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