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Behavioral Geneticist Combination Designs Quiz

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Behavioral Geneticist Combination Designs Quiz

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Questions and Answers

What is the purpose of including nontwin siblings in twin studies?

To examine the impact of adoption on cognitive ability

To test whether fraternal twins are more similar than nontwin siblings (correct)

To compare the influence of genetics and environment on twins

To test whether twins differ statistically from singletons

Which combination design brings the adoption design together with the family and twin designs?

Family-twin design

Twin-adoption design (correct)

Twin-family design

Adoption-twin design

What makes the adoption design comparing genetic and environmental relatives more powerful?

Conducting the study over a longer period of time

Including nontwin siblings in the study

Focusing on twins reared apart

Incorporating the family design (correct)

Which study has been following children from infancy to adulthood and is the longest ongoing adoption study?

The Colorado Adoption Project Signup and view all the answers

What does the adoption-twin combination involve?

Comparing twins adopted apart with twins reared together Signup and view all the answers

What is the families-of-twins method used for?

Examining the effects of rearing environment within the family on twins and their children Signup and view all the answers

What does the children-of-twins design allow researchers to examine?

The effects of parents on children and of children on parents Signup and view all the answers

What is the main finding from studies of identical twins reared apart?

There is strong genetic influence and little shared family environmental influence on general cognitive ability. Signup and view all the answers

What does the stepfamilies design assess?

Genetic influences by comparing full siblings with half siblings in stepfamilies Signup and view all the answers

What does the combination of twins and their children allow researchers to examine?