Nancy and Sarah were separated at birth and raised in separate households. They did not have contact with each other and were not aware that they were twins. Researchers studied them to see if there were any similarities in their behaviors and traits. What is this type of research called?
A) twin studies
B) trait studies
C) kinship studies
D) adoption studies

Question

Quizplus · Accepted Answer

Twin studies are designed to examine the roles of genetic and environmental factors on human traits by comparing the similarities between twins, especially those raised apart, like Nancy and Sarah.

Nancy and Sarah Were Separated at Birth and Raised in Separate