Researchers Must Be Careful to Include Participants in Their Studies

question 50

Multiple Choice

Researchers must be careful to include participants in their studies who represent the entire possible distribution of performance on both the test and the criterion to avoid ______.

• A) practice effects
• B) multicultural bias
• C) restriction of range
• D) criterion contamination

---

Definitions:

Total Fixed Cost

The sum of all costs that do not change with output level, including rent, salaries, and insurance.

Short Run

A period in economic analysis during which at least one input, such as plant size or capital, is fixed, limiting the ability to adjust to demand changes.

Long Run

A period in which all factors of production and costs are variable, allowing for full adjustment to changes in the economic environment.

Specialization

The process of focusing effort and resources on a limited number of activities, goods, or services to gain a comparative advantage in production.