The A-B-A-B Design Tends to Protect from the Following Threat

question 9

Multiple Choice

The A-B-A-B design tends to protect from the following threat or threats to internal validity:

• A) History
• B) Maturation
• C) Testing
• D) All of the above
• E) None of the above

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Definitions:

Inequality

A mathematical statement indicating that two expressions are not equal, typically involving symbols such as > (greater than), < (less than).

Graph

A diagram representing a system of connections or interrelations among two or more things by a number of distinctive dots, lines, bars, etc.

Inequality

A mathematical statement indicating that two expressions are not equal, using symbols such as >, <, ≥, or ≤.

Solution

The result of solving a problem or equation, providing a value or set of values that satisfy the conditions expressed.