,NSG 550 Diagnostic Reasoning Exam 1 Wilkes
University Study Guide Clinical Reasoning +
Q&A + Rationales 2026/2027
1. Which clinical reasoning model involves forming an early hypothesis based on initial patient
data and then testing it through focused inquiry?
A. Pattern recognition
B. Algorithm-based assessment
C. Hypothetico-deductive reasoning
D. Intuitive processing
Correct Answer: C. Hypothetico-deductive reasoning
Rationale: Hypothetico-deductive reasoning requires the clinician to generate preliminary
hypotheses early in the encounter and then collect focused data through history and
examination to confirm or refute those possibilities. This approach is considered a gold standard
for complex diagnostic situations where simple pattern recognition does not yield an immediate
answer. Pattern recognition relies on immediate matching of a presentation to a known illness
script, while intuitive processing is less structured and evidence-based than hypothetico-
deductive reasoning.
,2. Which step in the diagnostic reasoning process involves generating a list of potential causes
for the patient's presentation?
A. Hypothesis testing
B. Differential diagnosis
C. Data interpretation
D. Clinical decision-making
Correct Answer: B. Differential diagnosis
Rationale: Differential diagnosis is the list of possible conditions that explain the patient's
symptoms. It is the core of diagnostic reasoning and involves generating, weighing, and
prioritizing potential causes before ordering confirmatory tests.
3. A clinician dismisses test results that conflict with their initial diagnosis. This is an example of:
A. Anchoring bias
B. Confirmation bias
C. Availability heuristic
D. Premature closure
Correct Answer: B. Confirmation bias
Rationale: Confirmation bias is the tendency to seek or prioritize information that confirms
preexisting beliefs while discounting contradictory evidence. This is a common cognitive error in
diagnostic reasoning that can lead to missed or delayed diagnoses.
, 4. A clinician clings to early information and fails to adjust based on new data. This is an
example of:
A. Anchoring bias
B. Confirmation bias
C. Framing effect
D. Search satisficing
Correct Answer: A. Anchoring bias
Rationale: Anchoring bias occurs when a clinician becomes fixed on initial information and does
not adequately adjust the diagnostic hypothesis when new data becomes available. This is one
of the most common cognitive errors in diagnostic reasoning.
5. Which cognitive bias occurs when a clinician relies too heavily on the first piece of
information encountered during the diagnostic process?
A. Anchoring bias
B. Availability heuristic
C. Premature closure
D. Confirmation bias
University Study Guide Clinical Reasoning +
Q&A + Rationales 2026/2027
1. Which clinical reasoning model involves forming an early hypothesis based on initial patient
data and then testing it through focused inquiry?
A. Pattern recognition
B. Algorithm-based assessment
C. Hypothetico-deductive reasoning
D. Intuitive processing
Correct Answer: C. Hypothetico-deductive reasoning
Rationale: Hypothetico-deductive reasoning requires the clinician to generate preliminary
hypotheses early in the encounter and then collect focused data through history and
examination to confirm or refute those possibilities. This approach is considered a gold standard
for complex diagnostic situations where simple pattern recognition does not yield an immediate
answer. Pattern recognition relies on immediate matching of a presentation to a known illness
script, while intuitive processing is less structured and evidence-based than hypothetico-
deductive reasoning.
,2. Which step in the diagnostic reasoning process involves generating a list of potential causes
for the patient's presentation?
A. Hypothesis testing
B. Differential diagnosis
C. Data interpretation
D. Clinical decision-making
Correct Answer: B. Differential diagnosis
Rationale: Differential diagnosis is the list of possible conditions that explain the patient's
symptoms. It is the core of diagnostic reasoning and involves generating, weighing, and
prioritizing potential causes before ordering confirmatory tests.
3. A clinician dismisses test results that conflict with their initial diagnosis. This is an example of:
A. Anchoring bias
B. Confirmation bias
C. Availability heuristic
D. Premature closure
Correct Answer: B. Confirmation bias
Rationale: Confirmation bias is the tendency to seek or prioritize information that confirms
preexisting beliefs while discounting contradictory evidence. This is a common cognitive error in
diagnostic reasoning that can lead to missed or delayed diagnoses.
, 4. A clinician clings to early information and fails to adjust based on new data. This is an
example of:
A. Anchoring bias
B. Confirmation bias
C. Framing effect
D. Search satisficing
Correct Answer: A. Anchoring bias
Rationale: Anchoring bias occurs when a clinician becomes fixed on initial information and does
not adequately adjust the diagnostic hypothesis when new data becomes available. This is one
of the most common cognitive errors in diagnostic reasoning.
5. Which cognitive bias occurs when a clinician relies too heavily on the first piece of
information encountered during the diagnostic process?
A. Anchoring bias
B. Availability heuristic
C. Premature closure
D. Confirmation bias
