NUR 265 Introduction to Nursing Research & Evidence-Based
Practice Exam | Complete Practice Questions & Detailed
Explanations 2026/2027
Question 1
In the PICO framework for developing clinical research questions, what
does the letter "C" represent?
• A. Clinical significance
• B. Comparison or comparison group
• C. Cost-effectiveness analysis
• D. Control of confounding variables
Correct Answer: B. Comparison or comparison group.
Detailed Rationale: In the PICO mnemonic, P stands for
Population/Patient, I stands for Intervention or Indicator, C stands for
Comparison or comparison group, and O stands for Outcome.
Question 2
Which of the following study designs sits at the highest level of the
evidence hierarchy for clinical decision-making?
• A. Randomized controlled trial (RCT)
• B. Systematic review or meta-analysis of RCTs
• C. Single qualitative descriptive study
• D. Cohort observational study
,Correct Answer: B. Systematic review or meta-analysis of RCTs.
Detailed Rationale: Systematic reviews and meta-analyses of
randomized controlled trials are considered the pinnacle of the
evidence hierarchy because they synthesize findings across multiple
rigorous studies to minimize bias.
Question 3
A nurse researcher is studying the lived experiences of patients coping
with chronic heart failure. Which research tradition is most appropriate
for this study?
• A. Phenomenology
• B. Experimental trial
• C. Descriptive correlational research
• D. Quasi-experimental study
Correct Answer: A. Phenomenology.
Detailed Rationale: Phenomenology is a qualitative research tradition
focused on understanding and describing the lived experiences of
individuals regarding a specific phenomenon.
Question 4
Before initiating a research study involving human subjects, what is the
primary responsibility of an Institutional Review Board (IRB)?
• A. To secure funding grants for the principal investigator
• B. To protect the rights, welfare, and safety of human research
participants
, • C. To market the final research findings to clinical journals
• D. To analyze the quantitative data collected during the study
Correct Answer: B. To protect the rights, welfare, and safety of human
research participants.
Detailed Rationale: The primary mandate of an IRB is to review
research protocols to ensure that human subjects are protected from
undue risks, that informed consent is properly obtained, and that
ethical principles are upheld.
Question 5
Which element is essential for valid informed consent in nursing
research?
• A. The participant must be compensated financially for their time
• B. The participant must sign the form without understanding the
risks
• C. The participant must understand that participation is
completely voluntary and can be withdrawn at any time without
penalty
• D. The researcher must guarantee positive health outcomes
Correct Answer: C. The participant must understand that participation
is completely voluntary and can be withdrawn at any time without
penalty.
Detailed Rationale: Voluntary participation, comprehension of risks and
benefits, and the absolute right to withdraw at any time without loss of
benefits or standard care are core components of informed consent.
, Question 6
A nurse researcher evaluates a data collection tool and finds that it
consistently yields the same results under repeated testing conditions.
This demonstrates which key measurement property?
• A. Validity
• B. Reliability
• C. Sensitivity
• D. Specificity
Correct Answer: B. Reliability.
Detailed Rationale: Reliability refers to the consistency, dependability,
and stability of a measurement tool across repeated administrations or
observers.
Question 7
The extent to which a research tool actually measures what it is
intended to measure is known as:
• A. Validity
• B. Reliability
• C. Generalizability
• D. Reproducibility
Correct Answer: A. Validity.
Detailed Rationale: Validity evaluates whether an instrument accurately
measures the specific concept or construct it was designed to assess.
Question 8
Practice Exam | Complete Practice Questions & Detailed
Explanations 2026/2027
Question 1
In the PICO framework for developing clinical research questions, what
does the letter "C" represent?
• A. Clinical significance
• B. Comparison or comparison group
• C. Cost-effectiveness analysis
• D. Control of confounding variables
Correct Answer: B. Comparison or comparison group.
Detailed Rationale: In the PICO mnemonic, P stands for
Population/Patient, I stands for Intervention or Indicator, C stands for
Comparison or comparison group, and O stands for Outcome.
Question 2
Which of the following study designs sits at the highest level of the
evidence hierarchy for clinical decision-making?
• A. Randomized controlled trial (RCT)
• B. Systematic review or meta-analysis of RCTs
• C. Single qualitative descriptive study
• D. Cohort observational study
,Correct Answer: B. Systematic review or meta-analysis of RCTs.
Detailed Rationale: Systematic reviews and meta-analyses of
randomized controlled trials are considered the pinnacle of the
evidence hierarchy because they synthesize findings across multiple
rigorous studies to minimize bias.
Question 3
A nurse researcher is studying the lived experiences of patients coping
with chronic heart failure. Which research tradition is most appropriate
for this study?
• A. Phenomenology
• B. Experimental trial
• C. Descriptive correlational research
• D. Quasi-experimental study
Correct Answer: A. Phenomenology.
Detailed Rationale: Phenomenology is a qualitative research tradition
focused on understanding and describing the lived experiences of
individuals regarding a specific phenomenon.
Question 4
Before initiating a research study involving human subjects, what is the
primary responsibility of an Institutional Review Board (IRB)?
• A. To secure funding grants for the principal investigator
• B. To protect the rights, welfare, and safety of human research
participants
, • C. To market the final research findings to clinical journals
• D. To analyze the quantitative data collected during the study
Correct Answer: B. To protect the rights, welfare, and safety of human
research participants.
Detailed Rationale: The primary mandate of an IRB is to review
research protocols to ensure that human subjects are protected from
undue risks, that informed consent is properly obtained, and that
ethical principles are upheld.
Question 5
Which element is essential for valid informed consent in nursing
research?
• A. The participant must be compensated financially for their time
• B. The participant must sign the form without understanding the
risks
• C. The participant must understand that participation is
completely voluntary and can be withdrawn at any time without
penalty
• D. The researcher must guarantee positive health outcomes
Correct Answer: C. The participant must understand that participation
is completely voluntary and can be withdrawn at any time without
penalty.
Detailed Rationale: Voluntary participation, comprehension of risks and
benefits, and the absolute right to withdraw at any time without loss of
benefits or standard care are core components of informed consent.
, Question 6
A nurse researcher evaluates a data collection tool and finds that it
consistently yields the same results under repeated testing conditions.
This demonstrates which key measurement property?
• A. Validity
• B. Reliability
• C. Sensitivity
• D. Specificity
Correct Answer: B. Reliability.
Detailed Rationale: Reliability refers to the consistency, dependability,
and stability of a measurement tool across repeated administrations or
observers.
Question 7
The extent to which a research tool actually measures what it is
intended to measure is known as:
• A. Validity
• B. Reliability
• C. Generalizability
• D. Reproducibility
Correct Answer: A. Validity.
Detailed Rationale: Validity evaluates whether an instrument accurately
measures the specific concept or construct it was designed to assess.
Question 8
