How Can a Researcher Be Sure That Threats to Internal

question 32

Multiple Choice

How can a researcher be sure that threats to internal validity are being ruled out in the design?

• A) sorting out what threats are applicable in which settings
• B) comparing the results of several post-tests
• C) random selection will rule out, or greatly reduce the chances for statistical regression
• D) all the above

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Definitions:

Machines

Often represents capital goods in economics, essential for the production process in industries and affecting both the output capacity and efficiency of operations.

Short-Run Total Cost

The sum of all expenses, including both constant and flexible, associated with the production of goods or services over a short period.

Production Function

A mathematical model depicting the relationship between input factors and the output of goods or services.

Labor

The exertion of physical or mental capacities by individuals in the creation of products and services.