Differential History Effects Are a Threat to Internal Validity for Which

question 44

Multiple Choice

Differential history effects are a threat to internal validity for which of the following designs?

• A)differential research design
• B)one-group pretest-posttest design
• C)pretest-posttest nonequivalent control group design
• D)the other three choices are all designs threatened by differential history effects.

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Definitions:

80-Decibel Sound

A sound intensity level; equivalent to the loudness of city traffic or a telephone dial tone.

60-Decibel Sound

A measure of sound intensity, corresponding to moderate levels of noise similar to background music or conversation in a restaurant.

Intense

Characterized by deep or forceful feelings or experiences that are often extreme in nature.

Absolute Threshold

The smallest level of stimulus that can be detected by a sense, such as the lightest touch or faintest sound perceivable.