Which Example Lends the Strongest Support to an Environmental Explanation

question 22

Multiple Choice

Which example lends the strongest support to an environmental explanation of intelligence?

• A) Bright children take better advantage of their environmental resources.
• B) Siblings raised in different homes have IQs of 100 to 120.
• C) Children with intellectual disabilities who are moved from institutions into adoptive homes have an average gain of 30 IQ points.
• D) Minority groups in the United States have a mean IQ that is 15 points below the mean of the majority.

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Definitions:

Labor Supply Curve

This represents the relationship between the amount of labor that workers are willing to offer and the wage rate, typically showing that higher wages incentivize more labor supply.

Inclusive Unionism

The policy, pursued by industrial unions, in which a union attempts to include every worker in a given industry so as to be able to restrict the entire industry’s labor supply and thereby raise wages. Compare with exclusive unionism.

Industrial Unions

Labor unions that organize workers across a wide range of occupations within a single industry.

Monopsonist

A monopsonist is a market condition where there is only one buyer facing many sellers, allowing the buyer to exert significant control over prices.