Exam 7: Introduction to Quantitative Research

In a study investigating the effect of type of operating room mattress and surgical position on tissue interface pressures,the researchers used healthy young adult subjects.Which component of research design is most affected by this choice?

How would a nurse researcher ensure that the sample used in a research study is homogeneous?

The nurse researcher is designing a quantitative research study.What is the overall purpose of research design?

How can a nurse researcher know that a research study has external validity?

Which situation represents a threat to internal validity in an experimental study measuring the effect of a videotape of home-going instructions for patients being discharged after coronary artery bypass graft surgery?

When should a nurse researcher include an extraneous variable as part of a study's design?

How could a nurse researcher's use of a homogeneous population of subjects in a research study weaken that study?

Which situation reflects a reactive effect?

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?

A nurse researcher wants to study the effect of a nutritional educational intervention on weight loss in obese adolescents.The researcher designs a study including a homogeneous sample,randomization,and consistent data-collection procedures.Which variable should these approaches protect from interference?

Which factor is the measure used by a nurse researcher to keep the conditions of a quantitative study uniform?

A nurse researcher assigns half of a study sample to an experimental group and the other half of the study group to a control group.What does this represent regarding controlling for mediating variables?

Why would a nurse researcher want to limit or eliminate extraneous variables in a study?

A journal reviewer is critiquing a new quantitative research study that has been submitted for publication.In critiquing the study sections,in what order will components be scrutinized? A.Design description B.Research question C.Sample D.Data analysis E.Data collection

Which action represents the nurse researcher's attempt at constancy in data collection to control extraneous variables in a study examining the effect of hormone replacement therapy on bone-density loss in postmenopausal women?

What about external validity would concern a nurse researcher regarding a research study?

Why would the nurse researcher's administration of a pretest in a research study be of concern?

A nursing student is reviewing a research study in which researchers used pretest/posttest design to examine the effect of an AIDS education intervention on teenagers' knowledge level over a school year.What threats to internal validity could be present? (Select all that apply.)

The nurse researcher determines that all aspects of a study systematically and logically follow from the research problem.Which condition has been met?

When would the issue of control be less important in a quantitative study?