Dr.Jones is testing the intelligence of different pairs of twins.Judy and Rudy are identical twins who were separated at birth and raised in different environments.Jody and Cody are identical twins who grew up together.Finally,Jill and Phil are fraternal twins who grew up together.Which pair of twins would most likely score the same on the test? Which pair would least likely score the same?
A) Jody and Cody would most likely score the same; Judy and Rudy would least likely score the same.
B) Jody and Cody would most likely score the same; Jill and Phil would least likely score the same.
C) Jill and Phil would most likely score the same; Judy and Rudy would least likely score the same.
D) both Judy and Rudy and Jody and Cody would most likely score the same; Jill and Phil would least likely score the same.

Question

Quizplus · Accepted Answer

Identical twins who grow up together (Jody and Cody) are more likely to score similarly on intelligence tests because they share the same genes and environment. Fraternal twins who grow up together (Jill and Phil) are also likely to have some similarities in test scores due to shared environment. However, identical twins who were separated at birth and raised in different environments (Judy and Rudy) are less likely to score similarly on intelligence tests because their environment has played a bigger role in shaping their intelligence than genetics.

DrJones Is Testing the Intelligence of Different Pairs of Twins