In Which of the Following Examples Is the Independent Variable

question 48

Multiple Choice

In which of the following examples is the independent variable manipulated using the type technique?

• A) A researcher is interested in the effects of rehearsal on memory performance. She has one group of students use rehearsal whereas a control group does not rehearse.
• B) A researcher is interested in the effects of rehearsal on memory performance. She has one group of students rehearse items for 5 seconds, a second group for 10 seconds, and a third group for 15 seconds.
• C) A researcher is interested in the effects of rehearsal on memory performance. She has one group of students rehearse each item for 10 seconds. She has another group rehearse each item for 20 seconds. Finally, the third group rehearses each item for 30 seconds.
• D) A researcher is interested in the effects of rehearsal on memory performance. She has one group of students rehearse items individually, one item at a time. A second group rehearses using a grouping technique, in groups of five. The third comparison group rehearses "freely" as they see fit.

Acknowledge the psychological effects associated with life transitions, such as empty nest syndrome and the sandwich generation.

Understand the key concepts and terminologies in industrial-organizational psychology.

Recognize the impact of observation on employee productivity, specifically the Hawthorne effect.

Identify the components of job specification and analysis.

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Definitions:

Leptin

A hormone that affects appetite and is believed to affect the onset of puberty. Leptin levels increase during childhood and peak at around age 12.

Estrogen

A group of steroid hormones that play a key role in the development and regulation of the female reproductive system and secondary sex characteristics.

Cortisol

The primary stress hormone; fluctuations in the body’s cortisol level affect human emotions.

Lipid

A class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents. They are used by the body for energy storage and structural functions.