Insomnia in Older Adults

question 102

Multiple Choice

Insomnia in older adults

• A) is rare because changes in the brain structure make them sleepier earlier.
• B) can increase the risk of falls and cognitive impairments.
• C) is caused by a decline in stress hormones in the bloodstream.
• D) can be relieved by long-term medication.

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Definitions:

Correlation Coefficient

A statistical measure that describes the extent to which two variables change together, and the strength of their relationship.

Independent Variable

The variable in an experiment that is manipulated or changed by the researcher to observe its effect on the dependent variable.

Dependent Variable

The variable in an experiment that is expected to change in response to manipulations of the independent variable.

Correlation Coefficient

A statistical measure that calculates the strength and direction of a linear relationship between two variables, ranging from -1 to 1.