Exhibit 10-9: Identify the Threats to Internal Validity Illustrated in the Examples

question 3

Multiple Choice

Exhibit 10-9: Identify the threats to internal validity illustrated in the examples below.
-Refer to Exhibit 10-9.More low achievers than other students drop out of an individualized reading program designed to lead to gains in reading achievement.

• A) experimental mortality
• B) reactive effect of testing
• C) statistical regression
• D) maturation
• E) instrumentation

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Definitions:

Time Zones

Geographical regions around the world that observe a uniform standard time for legal, commercial, and social purposes.

Electronic Communication

refers to the transmission of information using electronic means such as email, social media, and text messaging.

Employees

Individuals who are hired by organizations or businesses to perform specific jobs in exchange for compensation, forming part of the workforce.

Consent

Permission for something to happen or agreement to do something, often given after receiving full information about it.