Research Has Shown That the Percentage of American Women of Childbearing

question 84

Multiple Choice

Research has shown that the percentage of American women of childbearing age who define themselves as voluntarily childless is ________.

• A) about the same as it was ten years ago
• B) about the same as it was five years ago
• C) rising
• D) declining rapidly

---

Definitions:

Genetic Influence

The impact of genes inherited from parents on the physical and behavioral characteristics of an individual.

Extraversion-Introversion

A personality dimension reflecting the extent to which an individual is outgoing and enjoys interacting with others versus being introverted and preferring a more solitary lifestyle.

Monozygotic Twins

Identical twins that result from the division of a single fertilized egg and share exactly the same genetic material.

Dizygotic Twins

Also known as fraternal twins, these are two siblings born from separate eggs and fertilized by different sperm cells, sharing about 50% of their DNA.