,NSG 550 Exam 1 | Advanced Pathophysiology
Wilkes University | Q & A | 2026/2027 Edition (PDF)
**1. Which of the following best describes the relationship between knowledge and cognition in the
process of clinical reasoning?**
A) Knowledge and cognition are independent processes that do not influence each other
B) Knowledge is reflective inquiry, while cognition is theory and research experience
C) Knowledge combined with cognition creates metacognition, which is required for clinical reasoning
D) Cognition is the accumulation of facts, while knowledge is the application of those facts
Correct Answer: Knowledge combined with cognition creates metacognition, which is required for
clinical reasoning
Rationale: Clinical reasoning requires the integration of knowledge (theory, research, and professional
experience) with cognition (reflective inquiry). This combination forms metacognition, the higher-order
thinking that enables practitioners to evaluate their own reasoning processes. Neither knowledge nor
cognition alone is sufficient for effective diagnostic reasoning.
**2. What is the primary function of the American College of Radiology (ACR) Appropriateness Criteria in
diagnostic reasoning?**
A) To mandate specific imaging studies for every clinical condition
B) To provide evidence-based guidelines for making the most appropriate imaging or treatment decision
for a specific clinical condition
C) To establish radiation safety standards for all imaging equipment
D) To replace clinical judgment with standardized imaging protocols
Correct Answer: To provide evidence-based guidelines for making the most appropriate imaging or
treatment decision for a specific clinical condition
Rationale: The ACR Appropriateness Criteria are evidence-based guidelines designed to assist providers
in selecting the most appropriate imaging or treatment for specific clinical conditions. They help
clinicians choose among imaging options based on risk-benefit ratios and clinical appropriateness rather
than mandating specific studies.
,**3. How is sensitivity defined in the context of diagnostic testing?**
A) True negatives divided by the sum of true negatives and false positives
B) True positives divided by the sum of true positives and false negatives
C) The proportion of all tests (positive and negative) that are correct
D) The ability of a test to reproduce the same results when repeated
Correct Answer: True positives divided by the sum of true positives and false negatives
Rationale: Sensitivity measures the proportion of people with a disease who have a positive test result.
It is calculated as true positives divided by the sum of true positives and false negatives. A highly
sensitive test detects the presence of a condition with relatively few false negatives, making it useful for
ruling out disease when negative.
**4. A researcher is evaluating a new diagnostic test and finds that it correctly identifies 80% of patients
who have the disease. This characteristic is best described as:**
A) Specificity of 80%
B) Sensitivity of 80%
C) Positive predictive value of 80%
D) Accuracy of 80%
Correct Answer: Sensitivity of 80%
Rationale: Sensitivity is the proportion of true positive results among patients who actually have the
disease. A sensitivity of 80% means the test correctly identifies 80% of people with the disease but
misses 20%. This is a measure of the test's ability to detect disease presence, not its ability to rule out
disease in healthy individuals.
**5. A test has a specificity of 80%. This means that:**
A) The test correctly identifies 80% of people who have the disease
B) The test correctly identifies 80% of people who do NOT have the disease
, C) The test misidentifies 80% of people who do not have the disease
D) The test accurately diagnoses 80% of all patients tested
Correct Answer: The test correctly identifies 80% of people who do NOT have the disease
Rationale: Specificity measures the proportion of people without the disease who have a negative test
result. It is calculated as true negatives divided by the sum of true negatives and false positives. A
specificity of 80% means the test correctly identifies 80% of healthy individuals but produces false
positives in 20%.
**6. Which of the following correctly pairs a test result with its interpretation for a patient with the
disease?**
A) Disease present + Positive test = False positive
B) Disease present + Negative test = False negative
C) Disease absent + Positive test = True positive
D) Disease absent + Negative test = False negative
Correct Answer: Disease present + Negative test = False negative
Rationale: A false negative occurs when a patient who has the disease receives a negative test result.
This is the most dangerous type of error because it may lead to missed diagnosis and delayed treatment.
True positives occur when disease is present and the test is positive.
**7. Which cognitive bias is most likely to cause premature closure in diagnostic reasoning?**
A) Availability heuristic
B) Anchoring bias
C) Confirmation bias
D) Overconfidence bias
Correct Answer: Anchoring bias
Wilkes University | Q & A | 2026/2027 Edition (PDF)
**1. Which of the following best describes the relationship between knowledge and cognition in the
process of clinical reasoning?**
A) Knowledge and cognition are independent processes that do not influence each other
B) Knowledge is reflective inquiry, while cognition is theory and research experience
C) Knowledge combined with cognition creates metacognition, which is required for clinical reasoning
D) Cognition is the accumulation of facts, while knowledge is the application of those facts
Correct Answer: Knowledge combined with cognition creates metacognition, which is required for
clinical reasoning
Rationale: Clinical reasoning requires the integration of knowledge (theory, research, and professional
experience) with cognition (reflective inquiry). This combination forms metacognition, the higher-order
thinking that enables practitioners to evaluate their own reasoning processes. Neither knowledge nor
cognition alone is sufficient for effective diagnostic reasoning.
**2. What is the primary function of the American College of Radiology (ACR) Appropriateness Criteria in
diagnostic reasoning?**
A) To mandate specific imaging studies for every clinical condition
B) To provide evidence-based guidelines for making the most appropriate imaging or treatment decision
for a specific clinical condition
C) To establish radiation safety standards for all imaging equipment
D) To replace clinical judgment with standardized imaging protocols
Correct Answer: To provide evidence-based guidelines for making the most appropriate imaging or
treatment decision for a specific clinical condition
Rationale: The ACR Appropriateness Criteria are evidence-based guidelines designed to assist providers
in selecting the most appropriate imaging or treatment for specific clinical conditions. They help
clinicians choose among imaging options based on risk-benefit ratios and clinical appropriateness rather
than mandating specific studies.
,**3. How is sensitivity defined in the context of diagnostic testing?**
A) True negatives divided by the sum of true negatives and false positives
B) True positives divided by the sum of true positives and false negatives
C) The proportion of all tests (positive and negative) that are correct
D) The ability of a test to reproduce the same results when repeated
Correct Answer: True positives divided by the sum of true positives and false negatives
Rationale: Sensitivity measures the proportion of people with a disease who have a positive test result.
It is calculated as true positives divided by the sum of true positives and false negatives. A highly
sensitive test detects the presence of a condition with relatively few false negatives, making it useful for
ruling out disease when negative.
**4. A researcher is evaluating a new diagnostic test and finds that it correctly identifies 80% of patients
who have the disease. This characteristic is best described as:**
A) Specificity of 80%
B) Sensitivity of 80%
C) Positive predictive value of 80%
D) Accuracy of 80%
Correct Answer: Sensitivity of 80%
Rationale: Sensitivity is the proportion of true positive results among patients who actually have the
disease. A sensitivity of 80% means the test correctly identifies 80% of people with the disease but
misses 20%. This is a measure of the test's ability to detect disease presence, not its ability to rule out
disease in healthy individuals.
**5. A test has a specificity of 80%. This means that:**
A) The test correctly identifies 80% of people who have the disease
B) The test correctly identifies 80% of people who do NOT have the disease
, C) The test misidentifies 80% of people who do not have the disease
D) The test accurately diagnoses 80% of all patients tested
Correct Answer: The test correctly identifies 80% of people who do NOT have the disease
Rationale: Specificity measures the proportion of people without the disease who have a negative test
result. It is calculated as true negatives divided by the sum of true negatives and false positives. A
specificity of 80% means the test correctly identifies 80% of healthy individuals but produces false
positives in 20%.
**6. Which of the following correctly pairs a test result with its interpretation for a patient with the
disease?**
A) Disease present + Positive test = False positive
B) Disease present + Negative test = False negative
C) Disease absent + Positive test = True positive
D) Disease absent + Negative test = False negative
Correct Answer: Disease present + Negative test = False negative
Rationale: A false negative occurs when a patient who has the disease receives a negative test result.
This is the most dangerous type of error because it may lead to missed diagnosis and delayed treatment.
True positives occur when disease is present and the test is positive.
**7. Which cognitive bias is most likely to cause premature closure in diagnostic reasoning?**
A) Availability heuristic
B) Anchoring bias
C) Confirmation bias
D) Overconfidence bias
Correct Answer: Anchoring bias
