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Questions in this quiz (19)
1Which of the following factors is considered a measure to keep the conditions of a quantitative study uniform?
- AAccuracy
- BMethods
- CControl
- DValidity
2What is the overall purpose of research design?
- ATo determine sample size
- BTo identify the problem statement
- CTo aid in the solution of a research question
- DTo assist the researcher in identifying gaps in knowledge
3Which of the following actions in a quantitative research study represents a measure to eliminate bias on the dependent variable?
- AEstablishing strict eligibility criteria for the study participants
- BEnsuring that all data are collected by a single researcher
- CFormulating at least two hypotheses for each research question
- DTesting a theoretical framework
4In what way does literature review assist a researcher in selecting the appropriate design for a quantitative study?
- ABy enlarging the scope of hypotheses
- BBy ensuring that the researcher remains faithful to the study purposes
- CBy allowing the researcher to compare current findings with previous findings
- DBy providing the opportunity to determine the objectivity of the problem area
5Which of the following conditions is met when all aspects of a study systematically and logically follow from the research problem?
- AInternal validity
- BExternal validity
- CAccuracy
- DLegitimacy
6A researcher wants to study the effects of head injury in children under the age of 5 years on mothers' decisions to work outside of the home. Which of the following factors negatively affects the feasibility of this study?
- AThe local region has a high percentage of single-parent families
- BHead injuries in children under age 5 represented less than 1% of hospital admissions during the year previous to the study
- CChildren under the age of 5 years are not able to read, write, or give direct informed consent to participate in this study
- DA comprehensive review of the literature shows no studies that examined this question were conducted during the past 15 years
7Which of the following factors would be considered a mediating variable among potential subjects in a study to determine whether high doses of vitamin C are helpful in reducing susceptibility to influenza?
- AGender and religion of the potential subjects
- BThe subjects' previous experience with influenza
- CThe subjects having received influenza vaccination
- DThe education level and marital status of the potential subjects
8Which of the following actions would best control for mediating variables when designing a study to determine whether a videotape or a pamphlet is most effective in educating young women about breast self examination?
- ARandomly assigning subjects to the two groups
- BExcluding subjects who already perform BSE on a regular basis
- CSelecting only heterosexual women as study subjects
- DDetermining what breast cancer means to individual participants
9How would an investigator ensure that a sample is homogenous?
- ABy restricting eligibility criteria to control for extraneous variables relevant to the study
- BBy randomly assigning subjects to either the experimental group or the control group
- CBy assigning one research assistant to collect all data
- DBy collecting all data at the same time of day
10In what way could a homogenous population of subjects in a study weaken the study?
- ABy decreasing the reliability of the findings
- BBy decreasing the generalizability of the findings
- CBy increasing the number of subjects needed to reach statistical significance
- DBy increasing the risk of the findings being the result of chance alone
11Why are extraneous variables limited or eliminated in a well-designed study?
- AMore research questions would be required to define the extraneous variable
- BExtraneous variables compete with the dependent variable as an explanation of the study's outcome
- CExtraneous variables compete with the independent variable as an explanation of the study's outcome
- DManipulation of extraneous variables increases the risk for researcher bias in the study's outcome
12When should an extraneous variable be included as part of the study's design?
- AWhen it is nonmodifiable, such as age or gender
- BWhen it is an important consideration for the outcome
- CWhen the researcher is limited by time and monetary issues
- DWhen it would not make a difference to the overall study outcome
13Which of the following techniques or actions represents constancy in data collection for control of extraneous variables in a study examining the effect of hormone replacement therapy on bone density loss in postmenopausal women?
- ADrawing blood from all subjects at the same time of day
- BAlways having the same nurse or phlebotomist always draw blood from all subjects
- CUsing the same room for drawing blood from all subjects
- DEnsuring that all the subjects are postmenopausal women taking hormone replacement therapy
14What does assigning half a study sample to an experimental group and the other half to a control group represent in controlling for mediating variables?
- AData collection constancy
- BManipulation of a mediating variable
- CElimination of mediating variables
- DManipulation of an independent variable
15What is the purpose of randomization, or random assignment of subjects, in a study?
- ATo ensure that all groups within a study are representative of the larger population
- BTo increase the chances that the study groups will be different from each other with regard to extraneous variables
- CTo ensure that current events do not influence the outcomes of the study
- DTo eliminate the need for establishing specific study criteria and subject eligibility
16For which type of quantitative study is the issue of control less important?
- APaper-and-pencil
- BExploratory
- CExperimental
- DCorrrelational
17Which of the following situations represents a threat to internal validity in an experimental study measuring the effect of audio-taped instructions to patients being discharged home after coronary artery bypass graft surgery?
- ABoth men and women were included as subjects in the study
- BTwo new surgeons were included as subjects in the study
- CPatients in the experimental group passed their tapes on to those in the control group receiving usual care
- DData collection took 1 year
18Why is the administration of a pretest a cause for concern in a research study?
- AIt is a threat to internal validity, as it may affect the post-test results
- BIt is a threat to external validity, as it may affect the post-test results
- CIt is a form of selection bias that contributes to the problem of maturation
- DIt is a form of maturation that contributes to the problem of selection bias
19Which of the following is the area of concern with regard to external validity?
- AThe relationship between the independent variable and the study outcomes
- BWhether a specific event influenced the dependent variable
- CThe degree to which extraneous or mediating variables interfered with the study outcomes
- DThe degree to which the findings are generalizable to populations beyond those studied
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- Quiz on Untitled, created by Katelyn Smith on 25/07/2016.
- Author
- Katelyn Smith
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- English
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