A group of college students believes that herbal tea has remarkable restorative
ID: 847047 • Letter: A
Question
A group of college students believes that herbal tea has remarkable restorative powers. To test their belief, they visit a local nursing home, visiting with and talking to the residents while serving them herbal tea. After several weeks of this, the nursing home staff reports that the residents are healthier and more cheerful.
1.) The subjects in this experiment are
A) the nursing home staff.
B) the nursing home residents.
C) the brands of herbal tea.
D) the college students.
2.) The factor (explanatory variable) in this experiment is
A) the nursing home residents
B) the college students
C) visits by the college students.
D) herbal tea
3.) The (biggest) lurking variable in this experiment is
A) the visits by the college students.
C) the control group.
B) the nursing home residents.
D) the herbal tea.
4.) This experiment could be improved in many ways. Which of the following is missing from this experiment?
A) make sure the college students serve Jack Daniels to some of the residents.
B) have the college students visit with all of the nursing home residents, but serve the herbal tea only to some of them.
C) the college students should drink tea at the same time as the nursing home residents.
D) the experiment needs to be double-blinded - both the college students and the nursing home residents should wear blindfolds while the tea is being drunk.
Explanation / Answer
Answer 1: The correct answer is (B) the nursing home residents.
As the nursing home residents health and behaviour is being studied.
Answer 2: The factor (explainatory variable) is (D) herbal tea.
As herbal tea is being served to conduct the study, it is the factor.
Answer 3: The biggest lurking variable is (A) the visits by college students.
As its the students who brings ans serves tea. This factor may be the hidden one as the responses may be due to their visit and not tea. Answer 4: The experiment can improved by (B) have the college students visit with all of the nursing home residents, but serve the herbal tea only to some of them.
As, control group is missing in the experiment and not serving some residents tea can be the control group.
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