Jack and Jill Are Twins

question 141

Multiple Choice

Jack and Jill are twins. Because he is a boy, Jack's parents encourage him to run. However, they discourage Jill from engaging in athletic activity. As a result, Jack is much faster at running up a hill than Jill. The difference in Jack and Jill's behavior is best explained by

• A) nonshared environmental influences.
• B) active gene-environment relations.
• C) polygenetic effects.
• D) niche-picking.

---

Definitions:

Appropriate Way

A manner or method that is suitable or proper in a given situation, often guided by social norms or ethical considerations.

Attain A Goal

The act of achieving or reaching a specific objective or target through effort and determination.

Balance-Scale Problem

A psychological task used to study the development of children's understanding of balance and the principles of weight and leverage.

Siegler's First Rule

A principle or guideline proposed by psychologist Robert Siegler, though without additional context, the specific rule cannot be described.