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Nice work! You have correctly chosen to use a Twin Study design to test your research question.
Next, you need to choose the most appropriate participants for your study.
As the name suggests, with a Twin Study design, you will be working with groups of twins. Remember that identical twins share a fetal environment and are genetically identical, and fraternal twins share a fetal environment but are genetically no more similar than ordinary brothers and sisters.
Of the following options, which one represents the best participants for your study?
A. A group of siblings who are identical twins
B. A group of siblings who are fraternal twins
C. A group of siblings who are identical twins and are extremely talkative, and another group of siblings who are identical twins and are extremely withdrawn
D. A group of siblings who are identical twins and another group of siblings who are fraternal twins
Answer (1)
The best participants for a Twin Study design are a group of identical twins and a group of fraternal twins. This allows researchers to differentiate the effects of genetics from environmental influences. The genetic similarities of identical twins provide critical insights into hereditary traits in comparison to fraternal twins. ;
