The MacArthur Longitudinal Twin Study found that __________ were more similar than fraternal twins in spatial memory, ability to categorize things, and word comprehension.
A)false twins
B)dizygotic twins
C)monozygotic twins
D)binovular twins

Question

Quizplus · Accepted Answer

The MacArthur Longitudinal Twin Study found that monozygotic (identical) twins were more similar than fraternal twins in tasks of spatial memory, ability to categorize things, and word comprehension. This suggests a genetic basis for these cognitive abilities. Options A (false twins) and D (binovular twins) are not types of twins, and option B (dizygotic twins) can be eliminated as the study found that they were not as similar as monozygotic twins in these cognitive abilities.

The MacArthur Longitudinal Twin Study Found That __________ Were More