It Is Late at Night,and David Is Studying for an Exam.David

question 98

Multiple Choice

It is late at night,and David is studying for an exam.David looks up and sees his older brother Jeff standing in his doorway.David speaks to him but gets no response.Jeff's eyes are open but he has a blank expression on his face,and Jeff shuffles his feet rather than walking normally.David follows him back to his room,and Jeff gets back into bed.David has just witnessed an episode of

• A) narcolepsy.
• B) somnambulism.
• C) REM behavior disorder.
• D) sleep terror disorder.

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Definitions:

Quantitative

Pertaining to the measurement or quantification of variables; involving numerical data that can be analyzed statistically.

Categorical

Relating to, describing, or based on categories, often used in statistics to refer to variables that represent types rather than numbers.

Variables

Characteristics or quantities that can assume different values across individuals or over time.

Values

Numerical or categorical data represented or measured in statistics, programming, and various scientific disciplines, reflecting quantities, characteristics, or labels.