A nurse researcher assigns participants to experimental and control groups in such a manner that each participant in a population has an equal chance of being selected.What is the researcher using?
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Multiple Choice
Which of the following aspect of the study is considered a measure to maintain the uniformity of conditions of a quantitative study?
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Multiple Choice
How could a nurse researcher's use of a homogeneous sample weaken a research study?
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Multiple Choice
A nurse researcher is investigating the effect of type of operating room mattress and surgical position on tissue interface pressures in healthy young adults.Which component of research is most affected by the choice of participants?
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For which of these reasons would a nurse researcher choose to assign participants randomly to groups in a study?
Multiple Choice
A nurse is designing a study to determine whether a videotape or a written pamphlet is more effective in teaching young women how to perform breast self-examination (BSE).Which of these actions would provide the best control for a mediating variable?
Multiple Choice
A nurse researcher assigns half a study sample to an experimental group and the other half to a control group.What does this action represent?
Multiple Choice
When should a nurse researcher include an extraneous variable as part of a study's design?
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Which of these situations describes a reactive (Hawthorne)effect?
Multiple Choice
The issue of control would be less important in a quantitative study with which type of research design?
Multiple Choice
A study is examining the effect of a new antilipemic drug,compared with placebo,on lipoprotein levels in postmenopausal women.Which of these actions represents the researcher's attempt at constancy in data collection to control extraneous variables?
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What is the overall purpose of research design in a quantitative research study?
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How would a nurse researcher ensure that the sample used in a quantitative study is homogeneous?
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Which situation represents a threat to internal validity in an experimental study measuring the effect of a videotape of discharge instructions for patients who underwent coronary artery bypass graft (CABG)surgery?
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Why should a nurse researcher want to limit or eliminate extraneous variables in a study?
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When reviewing a research report,the nurse determines that all aspects of a study systematically and logically follow from the research problem.Which condition has been met?
Multiple Choice
A nurse researcher should consider mortality a threat to the study's internal validity for which of these reasons?
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In which of these ways does the nurse researcher's literature review help select the appropriate study design?
Multiple Choice
The nurse researcher designed a study examining anxiety among elementary school children.If a widely publicized murder of a child occurred in the city during the time frame of the study,what type of threat to internal validity would the murder represent?
Multiple Choice
A nurse researcher can control for selection bias in a study by taking which of these actions?
Multiple Choice