Reliability And Validity
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- Integrating Research, Evidence-Based Practice, and Quality Improvement ProcessesResearch Questions, Hypotheses, and Clinical QuestionsGathering and Appraising the LiteratureTheoretical Frameworks for ResearchIntroduction to Qualitative ResearchQualitative Approaches to ResearchAppraising Qualitative ResearchIntroduction to Quantitative ResearchExperimental and Quasi-Experimental DesignsNonexperimental DesignsSystematic Reviews and Clinical Practice GuidelinesSamplingLegal and Ethical IssuesData Collection MethodsReliability and ValidityData Analysis: Descriptive and Inferential StatisticsUnderstanding Research FindingsAppraising Quantitative ResearchStrategies and Tools for Developing an Evidence-Based PracticeDeveloping an Evidence-Based PracticeQuality Improvement
Question 1
Free
Multiple Choice
Nurse researchers critiquing research reports should be concerned with the assessment of the validity and reliability of study instruments to do what?
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To determine the utility of the instruments for triangulation
To assess the relationships between the hypotheses and the research questions
To determine whether the concepts and variables were measured adequately
To assess whether the concept under study is being treated as a dependent or an independent variable
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Question 2
Free
Multiple Choice
An ear temperature probe that consistently reports body temperature at a degree lower than the patient's actual temperature has what type of reliability or validity problem?
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Reduced reliability, systematic error
Reduced validity, random error
Increased validity, systematic error
Increased validity, random error
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Question 3
Free
Multiple Choice
A researcher who is developing a new instrument to measure pain has been informed that the instrument has face validity. The researcher's next step should be to do what?
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Use the instrument in a parent study.
Use the instrument in a pilot study.
Assess the reliability of the instrument.
Assess the content validity of the instrument.
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Question 4
Free
Multiple Choice
Which type of validity is most difficult to establish?
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Content validity
Construct validity
Predictive validity
Concurrent validity
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Question 5
Free
Multiple Choice
When the nurse researcher demonstrates that an instrument is highly reliable, which type of error is reduced?
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Random error
Variance error
Persistent error
Systematic error
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Question 6
Multiple Choice
The reliability coefficient of a new instrument is established at 0.86. The nurse researcher should interpret this finding to mean what?
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High error variance; high reliability
High error variance; low reliability
Low error variance; high reliability
Low error variance; low reliability
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Question 7
Multiple Choice
A new instrument has been determined to be highly valid. The nurse researcher should interpret this finding to mean what?
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It is sensitive but not specific.
Its use results in minimal random errors.
It accurately measures level of mentation.
Determination of interrater reliability is unnecessary.
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Question 8
Multiple Choice
Which type of validity is demonstrated when a nurse researcher submits items of an instrument to a panel of experts to evaluate item clarity?
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Content validity
Construct validity
Concurrent validity
Criterion-related validity
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Question 9
Multiple Choice
Which type of validity is demonstrated by administering a test in which all items relate to wound care, and then evaluating student performance in caring for patients with wounds in the clinical setting?
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Face validity
Content validity
Construct validity
Criterion-related validity
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Question 10
Multiple Choice
What is the significance of concurrent validity to a nurse researcher?
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The degree of correlation between the measure of the concept and some future measure of the same concept
The degree of correlation of two measures of the same concept administered at the same time
The extent to which a test measures a theoretical construct or trait
The representativeness of the items to measure a specific concept
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Question 11
Multiple Choice
What type of validity is demonstrated by examining the extent to which a passing grade in a nursing course is correlated with passing the registered nurse licensure examination?
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Content validity
Construct validity
Predictive validity
Concurrent validity
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Question 12
Multiple Choice
During development of an instrument to measure self-esteem, the nurse researcher administered the instrument to individuals who were substance abusers and to individuals who were not substance abusers and anticipated a significant difference in scores. This method of establishing construct validity is categorized as what?
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Factor analysis
Convergent validity
Discriminant validity
Contrasted-groups approach
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Question 13
Multiple Choice
A nurse researcher assesses the degree to which individual items on a scale cluster together around multiple dimensions using what?
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Factor analysis
Split-half reliability
Cronbach's alpha coefficient
Kuder-Richardson coefficient
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Question 14
Multiple Choice
A nurse researcher describes an instrument that is administered repeatedly and obtains the same results as having what?
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Validity
Reliability
Consistency
Predictability
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Question 15
Multiple Choice
A nurse researcher describes an instrument that produces the same result when it is administered to the same subjects under similar conditions on two or more occasions as possessing what?
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Homogeneity
Equivalence
Stability
Validity
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Question 16
Multiple Choice
What property is established when the results of two separately administered tests that measure the same domain or concept are highly correlated?
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Validity
Stability
Equivalence
Homogeneity
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Question 17
Multiple Choice
A nurse researcher administered a test anxiety questionnaire to a group of nursing students before they attended a test anxiety workshop and then administered a different questionnaire to the same nurses immediately following the workshop. This is indicative of which type of reliability?
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Split-half
Test-retest
Parallel form
Alternate form
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Question 18
Multiple Choice
A nurse researcher should be concerned about an instrument's degree of internal consistency because it means what?
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The instrument is appropriate to use to measure a single concept.
The instrument has low measurement error and high error variance.
More refinement of the instrument is needed before it can be applied.
The instrument is valid, but the reliability has yet to be determined.
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Question 19
Multiple Choice
A nurse researcher determines an instrument's homogeneity using which type of reliability?
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Split-half reliability
Test-retest reliability
Interrater reliability
Alternate form reliability
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Question 20
Multiple Choice
A nurse researcher would want to use a Kuder-Richardson (KR-20) coefficient to establish the internal consistency of an instrument in which case?
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When questions are open-ended
When multiple choice tests are analyzed
When the instrument uses a Likert-type response scale
When the instrument is designed to measure more than one concept
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