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Asked by Sammy Battaglia on Apr 30, 2024

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Researchers who examine the heritability of personality traits using the twin-study method would probably begin with the assumption that

A) dizygotic twins share an environment that is more similar than the environment shared by monozygotic twins.
B) monozygotic twins share an environment that is more similar than the environment shared by dizygotic twins.
C) dizygotic twins share an environment that is just as similar as the environment shared by monozygotic twins.
D) monozygotic twins will be treated more alike than dizygotic twins.

Environmental Shared

The portion of the environment that is experienced identically by individuals, often used in contrast to "non-shared environment" in studies of heritability.

Monozygotic Twins

Identical twins originating from the division of a single fertilized egg, sharing all of their genetic material.

Dizygotic Twins

Also known as fraternal twins, they develop from two separate eggs fertilized by two different sperm cells, leading to siblings with genetic similarities but not identical genomes.

  • Understand the employment of twin study techniques in exploring the genetic foundations of personality traits.
  • Differentiate among various approaches, including twin studies and adoption studies, to separate genetic from environmental factors affecting personality.
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Shaick IrfanMay 04, 2024
Final Answer :
C
Explanation :
Researchers using the twin-study method to examine the heritability of personality traits typically start with the assumption that both monozygotic (identical) and dizygotic (fraternal) twins share environments that are equally similar. This assumption allows them to attribute differences in traits more directly to genetics, as the environmental variable is considered constant between the two types of twins.

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