When a Group of Individuals Is Tested in a Series

question 31

Multiple Choice

When a group of individuals is tested in a series of treatment conditions over time,which of the following factors can cause progressive improvement in performance from treatment to treatment and thus provide an alternative explanation for the results?

• A)history
• B)selection bias
• C)practice
• D)fatigue

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Definitions:

Music

A form of art that uses sound organized in time, often combining vocal or instrumental sounds to produce harmony, rhythm, and expression of emotion.

Productivity

The efficiency at which goods or services are produced, often measured in terms of output per unit of input.

Experimental Group

A group of subjects in an experiment who are exposed to the variable under study.

Low-Fat Diet

A dietary approach that reduces the intake of fat, especially saturated fat and cholesterol, to promote heart health and possibly aid in weight loss.