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Asked by Marianhalim

Brusser and Cullen wanted to test the effectiveness of a new relaxation/biofeedback intervention on menopausal symptoms. They invited women who presented themselves in an outpatient clinic with complaints of severe hot flashes to participate in the study of the experimental treatment. These 30 women were asked to record, every day for 2 weeks before their treatment, the frequency and duration of their hot flashes. The intervention involved five 1-hour sessions over a period of a week. Then, for the 2 weeks after the treatment, the women were asked to record their hot flashes again every day. At the end of the study, Brusser and Cullen found that, on average, both the frequency and average duration of the hot flashes had been significantly reduced in their sample of 30 women. They concluded that their intervention was an effective alternative to estrogen replacement therapy in treating menopausal hot flashes.

 

QUESTION 1

 

What is the independent variable in this study? 

QUESTION 2
 

 

What is the dependent variable in this study? 

QUESTION 3

 

Was random assignment used in this study? 

QUESTION 4

 

 Is the design experimental, quasi-experimental, or nonexperimental? 

QUESTION 5

 

What is the specific name of the design used in this study?

 

QUESTION 6

 

Was blinding used in this study?  Explain. 

QUESTION 7

 

Was selection a possible threat to the internal validity of this study?  Why?

QUESTION 8

 

Was history a possible threat to the internal validity of this study?  Why?

QUESTION 9

 

Was mortality a possible threat to the internal validity of the study? Why?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SCIENCE
HEALTH SCIENCE
NURSING
NUR 351

 

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