Many Americans Complain About Being Sleep Deprived

question 16

Multiple Choice

Many Americans complain about being sleep deprived. A team of psychologists researched the reasons for this sleep deprivation. After determining that one reason was poor time management, they devised a program to help people manage their time better. They recruited a random sample of 30 people at a major shopping center and randomly split them into three groups of size 10. Group 1 (the controls) received a logbook asking them to record the number of hours slept for a week, but nothing else. Group 2 (the informed group) was shown a video to help improve time management. Group 3 (the intervention) participated in a two-day training course on improving time management. Groups 2 and 3 were also asked to keep records for one week on the number of hours slept. The psychologists were interested in learning if providing information or an intervention affects sleep time. The analysis of this type of study is called:

• A)a many means comparison study.
• B)a multiple intervention comparison study.
• C)an analysis of variance.
• D)None of the answer options is correct.

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Definitions:

Placebo

An inert substance or treatment given to a control group in experiments to compare effects with those of actual treatments.

Vaccinated

The state of having received a vaccine to produce immunity against a specific disease.

Blood Type

A system for identifying blood types through the detection or nondetection of inherited antigens on the surfaces of red blood cells.

Association

A statistical relationship between two or more variables, indicating how changes in one variable are connected with changes in another.