NR547 Week 3 Midterm Exam - Differential Diagnosis in Psychiatric-Mental Health Across the Lifespan
WEEK 3 MIDTERM EXAM: NR547 / NR-547 (LATEST )
DIFFERENTIAL DIAGNOSIS IN PSYCHIATRIC-MENTAL HEALTH ACROSS
THE LIFESPAN PRACTICUM | QUESTIONS AND ANSWERS | 100% CORRECT
| GRADE A - CHAMBERLAIN
Chamberlain University | NR 547 Differential Diagnosis in Psychiatric-Mental Health Across the Lifespan Practicum | 120
Questions | Cognitive Distribution: 20% Recall / 50% Application / 30% Analysis | Aligned with AACN Essentials of
Master's Education and PMHNP Differential Diagnosis Competencies (2026/2027 Edition)
Section 1: Foundations of Psychiatric-Mental Health Differential Diagnosis
*Q1:* A 42-year-old female presents to the psychiatric-mental health clinic with a 3-week history of
depressed mood, anhedonia, and hypersomnia. She recently started a new medication for hypertension two
weeks before symptom onset. Which of the following is the MOST appropriate initial step in the differential
diagnosis process?
A. Begin a trial of selective serotonin reuptute inhibitor (SSRI) therapy to address the depressive
symptoms.
B. Conduct a comprehensive biopsychosocial assessment including medication review,
targeted laboratory workup, and risk evaluation. *[CORRECT]*
C. Refer the patient for cognitive behavioral therapy as the first-line intervention.
D. Hospitalize the patient for observation due to the possibility of suicidal ideation.
Correct Answer: B
Rationale: Per the NR 547 curriculum and AACN Essentials, the first step in differential diagnosis is a comprehensive
biopsychosocial assessment that includes medication review, laboratory testing, and evaluation of medical conditions
that may mimic psychiatric disorders. The patient's new antihypertensive (potentially a beta-blocker or methyldopa) is
a known cause of medication-induced depressive disorder and must be ruled out before initiating psychotropics.
Starting an SSRI (A) prematurely would constitute a diagnostic error, CBT (C) is premature before completing the
workup, and hospitalization (D) is not indicated absent acute suicide risk.
*Q2:* Which framework provides the foundational structure for organizing clinical information during
psychiatric differential diagnosis by integrating biological, psychological, and sociocultural domains?
A. The medical model emphasizing neurobiology exclusively.
B. The biopsychosocial-spiritual model introduced by Engel. *[CORRECT]*
C. The diathesis-stress model of schizophrenia only.
D. The recovery-oriented model focused exclusively on peer support.
Correct Answer: B
Rationale: Engel's biopsychosocial model (broadened in PMHNP practice to include spiritual and cultural domains) is
the foundational framework for organizing differential diagnosis. The NR 547 curriculum and AACN Essentials
emphasize that biological, psychological, social, cultural, and spiritual factors must all be evaluated to avoid
diagnostic reductionism. The medical model (A) is too narrow, the diathesis-stress model (C) is specific to
schizophrenia, and the recovery model (D) informs care planning rather than diagnostic formulation.
Chamberlain University | NR 547 Practicum | 2026/2027 Edition Page 1
,NR547 Week 3 Midterm Exam - Differential Diagnosis in Psychiatric-Mental Health Across the Lifespan
*Q3:* A PMHNP evaluates a 28-year-old male with new-onset psychosis. The patient has a family history of
schizophrenia, so the clinician immediately diagnoses schizophrenia spectrum disorder without considering
substance use, sleep deprivation, or autoimmune etiologies. Which cognitive bias is MOST likely influencing
this diagnostic formulation?
A. Availability heuristic.
B. Anchoring bias. *[CORRECT]*
C. Confirmation bias only.
D. Hindsight bias.
Correct Answer: B
Rationale: Anchoring bias occurs when a clinician fixates on the initial impression (here, the family history prompting
schizophrenia) and fails to adjust despite new or alternative data. The NR 547 curriculum highlights anchoring as a
leading cause of diagnostic error in psychiatric differential diagnosis. The availability heuristic (A) relies on recalled
cases rather than anchoring on a specific cue, confirmation bias (C) involves seeking only supportive evidence, and
hindsight bias (D) occurs after outcomes are known.
*Q4:* During a mental status examination, the PMHNP documents that a patient demonstrates constricted
affect, speaks in a soft, monotonous voice, and reports feeling 'empty' rather than sad. Which component of
the MSE captures these observations?
A. Cognition and insight.
B. Thought content and perception.
C. Mood and affect. *[CORRECT]*
D. Sensorium and attention.
Correct Answer: C
Rationale: Mood (the patient's subjective emotional state) and affect (the objective observable expression) are the
MSE components that capture reported emptiness and observable constricted, monotonous expression. The NR 547
curriculum and PMHNP differential diagnosis competencies require precise MSE terminology so that mood disorders
can be differentiated from anxiety, psychotic, and neurocognitive disorders. Cognition (A), thought content (B), and
sensorium (D) capture distinct domains.
*Q5:* Which of the following BEST defines 'diagnostic overshadowing' as it pertains to psychiatric
differential diagnosis across the lifespan?
A. Deliberately withholding a diagnosis to protect the patient from stigma.
B. Attributing all new clinical symptoms to a preexisting diagnosis, thereby missing comorbid
or alternative conditions. *[CORRECT]*
C. Diagnosing multiple conditions simultaneously when only one is present.
D. Deferring diagnosis until laboratory confirmation is obtained.
Correct Answer: B
Rationale: Diagnostic overshadowing occurs when a clinician attributes new symptoms to an established diagnosis
(e.g., attributing abdominal pain in an adult with intellectual disability to 'behavioral issues') and fails to investigate
alternative or comorbid conditions. The NR 547 curriculum emphasizes this as a leading source of preventable
diagnostic error, particularly in patients with developmental disabilities, severe mental illness, and older adults.
Options A, C, and D describe other clinical behaviors, not overshadowing.
Chamberlain University | NR 547 Practicum | 2026/2027 Edition Page 2
,NR547 Week 3 Midterm Exam - Differential Diagnosis in Psychiatric-Mental Health Across the Lifespan
*Q6:* A 35-year-old female with a history of childhood sexual abuse presents for an initial psychiatric
evaluation. She becomes visibly tense when asked routine intake questions and reports that she 'does not
like feeling trapped in small rooms.' Which trauma-informed care approach is MOST appropriate at this point
in the assessment?
A. Continue the full structured interview without modification to ensure diagnostic completeness.
B. Pause the interview, explain the rationale for sensitive questions, offer choice and control,
and proceed only with explicit permission. *[CORRECT]*
C. Discontinue the assessment entirely and refer to trauma-focused therapy before establishing any
diagnosis.
D. Administer the ACE questionnaire immediately to quantify trauma exposure.
Correct Answer: B
Rationale: Trauma-informed care emphasizes safety, trustworthiness, choice, collaboration, and empowerment.
Pausing, explaining rationale, and proceeding only with consent respects autonomy and prevents re-traumatization
while still enabling diagnostic formulation. The NR 547 curriculum and SAMHSA trauma-informed principles require
that clinicians adapt structured interviewing to trauma histories. Continuing unchanged (A) risks re-traumatization,
immediate referral (C) skips diagnostic assessment, and immediate ACE administration (D) ignores the patient's
acute distress.
*Q7:* A 50-year-old immigrant male from a collectivist cultural background presents with somatic
complaints, fatigue, and reports that his 'heart is heavy.' He denies depressed mood but meets criteria on
the PHQ-9. Which DSM-5 cultural formulation component is MOST directly relevant to interpreting these
symptoms?
A. The cultural concepts of distress domain of the Cultural Formulation Interview. *[CORRECT]*
B. The neurological soft signs examination.
C. The genetic risk and prognostic factors domain.
D. The Mini-Mental State Examination score.
Correct Answer: A
Rationale: The DSM-5 Cultural Formulation Interview (CFI) explicitly assesses cultural identity, cultural explanations
of distress, cultural stressors and supports, and cultural elements of the clinician-patient relationship. The 'cultural
concepts of distress' domain explains idioms such as 'heavy heart' and somatic presentation that may not map to
Western mood constructs. The NR 547 curriculum requires PMHNPs to apply the CFI to avoid pathologizing
culturally normative expressions. Options B, C, and D address unrelated domains.
*Q8:* A patient scores 14 on the PHQ-9. Which interpretation aligns with the validated cutoff scoring for this
instrument?
A. Minimal or no depressive symptoms.
B. Mild depression.
C. Moderate depression. *[CORRECT]*
D. Severe depression.
Correct Answer: C
Rationale: The validated PHQ-9 cutoffs are: 0-4 minimal, 5-9 mild, 10-14 moderate, 15-19 moderately severe, and
20-27 severe. A score of 14 falls in the moderate range and supports a probable diagnosis of major depressive
disorder when clinical correlation is present. The NR 547 curriculum requires PMHNPs to interpret screening
instruments accurately to drive differential diagnosis. The other options misclassify the score.
Chamberlain University | NR 547 Practicum | 2026/2027 Edition Page 3
, NR547 Week 3 Midterm Exam - Differential Diagnosis in Psychiatric-Mental Health Across the Lifespan
*Q9:* A 19-year-old male presents to the emergency department after his roommate found him with a
ligature. He reports a recent breakup and a one-week history of depressed mood, anhedonia, and insomnia.
He denies active suicidal intent but describes passive ideation. Which structured risk assessment should the
PMHNP prioritize to stratify risk?
A. Hamilton Depression Rating Scale (HAM-D).
B. Columbia-Suicide Severity Rating Scale (C-SSRS). *[CORRECT]*
C. Generalized Anxiety Disorder-7 (GAD-7).
D. Mini-Mental State Examination (MMSE).
Correct Answer: B
Rationale: The C-SSRS is the validated structured instrument for stratifying suicide risk by ideation severity, intensity,
and behavior, including aborted and interrupted attempts. The NR 547 curriculum and PMHNP competencies require
its use in acute presentations. The HAM-D (A) measures depressive symptom severity but not suicide risk
specifically, the GAD-7 (C) screens for anxiety, and the MMSE (D) screens for cognitive impairment, none of which
stratify acute suicide risk.
*Q10:* A 56-year-old female with treatment-resistant depression, chronic pain, and type 2 diabetes reports
continued depressive symptoms despite trials of two SSRIs and one SNRI. She has not responded to
optimized antidepressant therapy. Which interdisciplinary referral is MOST appropriate to support the
differential diagnosis and treatment planning process?
A. Referral to a pain specialist, endocrinologist, and pharmacist for collaborative medication
review, with consideration of ECT evaluation by a psychiatrist. *[CORRECT]*
B. Referral to a podiatrist only.
C. Self-management without further specialist involvement.
D. Referral to optometry for vision screening.
Correct Answer: A
Rationale: Interdisciplinary collaboration is a core PMHNP competency under AACN Essentials and the NR 547
curriculum. Treatment-resistant depression with comorbid chronic pain and diabetes warrants collaborative review by
a pain specialist, endocrinologist, and pharmacist, plus evaluation for neuromodulation such as ECT or TMS. The
other options fail to address the complex biopsychosocial contributors that maintain depressive symptoms.
*Q11:* Which documentation element is REQUIRED when recording a differential diagnosis formulation in
the psychiatric-mental health setting per AACN Essentials and PMHNP competencies?
A. A single most likely diagnosis without listing alternatives.
B. The differential diagnoses considered, the supporting and refuting evidence for each, and
the clinical reasoning supporting the primary working diagnosis. *[CORRECT]*
C. Only the ICD-10 code without narrative explanation.
D. The patient's insurance information only.
Correct Answer: B
Rationale: AACN Essentials and PMHNP documentation standards require that differential diagnoses, supporting
and refuting evidence, and clinical reasoning be explicitly documented so that other clinicians can follow the
diagnostic logic and reassess as data evolve. A single diagnosis (A), ICD-10 code alone (C), and insurance
information (D) all fail to meet standards for clinical documentation of reasoning.
Chamberlain University | NR 547 Practicum | 2026/2027 Edition Page 4
WEEK 3 MIDTERM EXAM: NR547 / NR-547 (LATEST )
DIFFERENTIAL DIAGNOSIS IN PSYCHIATRIC-MENTAL HEALTH ACROSS
THE LIFESPAN PRACTICUM | QUESTIONS AND ANSWERS | 100% CORRECT
| GRADE A - CHAMBERLAIN
Chamberlain University | NR 547 Differential Diagnosis in Psychiatric-Mental Health Across the Lifespan Practicum | 120
Questions | Cognitive Distribution: 20% Recall / 50% Application / 30% Analysis | Aligned with AACN Essentials of
Master's Education and PMHNP Differential Diagnosis Competencies (2026/2027 Edition)
Section 1: Foundations of Psychiatric-Mental Health Differential Diagnosis
*Q1:* A 42-year-old female presents to the psychiatric-mental health clinic with a 3-week history of
depressed mood, anhedonia, and hypersomnia. She recently started a new medication for hypertension two
weeks before symptom onset. Which of the following is the MOST appropriate initial step in the differential
diagnosis process?
A. Begin a trial of selective serotonin reuptute inhibitor (SSRI) therapy to address the depressive
symptoms.
B. Conduct a comprehensive biopsychosocial assessment including medication review,
targeted laboratory workup, and risk evaluation. *[CORRECT]*
C. Refer the patient for cognitive behavioral therapy as the first-line intervention.
D. Hospitalize the patient for observation due to the possibility of suicidal ideation.
Correct Answer: B
Rationale: Per the NR 547 curriculum and AACN Essentials, the first step in differential diagnosis is a comprehensive
biopsychosocial assessment that includes medication review, laboratory testing, and evaluation of medical conditions
that may mimic psychiatric disorders. The patient's new antihypertensive (potentially a beta-blocker or methyldopa) is
a known cause of medication-induced depressive disorder and must be ruled out before initiating psychotropics.
Starting an SSRI (A) prematurely would constitute a diagnostic error, CBT (C) is premature before completing the
workup, and hospitalization (D) is not indicated absent acute suicide risk.
*Q2:* Which framework provides the foundational structure for organizing clinical information during
psychiatric differential diagnosis by integrating biological, psychological, and sociocultural domains?
A. The medical model emphasizing neurobiology exclusively.
B. The biopsychosocial-spiritual model introduced by Engel. *[CORRECT]*
C. The diathesis-stress model of schizophrenia only.
D. The recovery-oriented model focused exclusively on peer support.
Correct Answer: B
Rationale: Engel's biopsychosocial model (broadened in PMHNP practice to include spiritual and cultural domains) is
the foundational framework for organizing differential diagnosis. The NR 547 curriculum and AACN Essentials
emphasize that biological, psychological, social, cultural, and spiritual factors must all be evaluated to avoid
diagnostic reductionism. The medical model (A) is too narrow, the diathesis-stress model (C) is specific to
schizophrenia, and the recovery model (D) informs care planning rather than diagnostic formulation.
Chamberlain University | NR 547 Practicum | 2026/2027 Edition Page 1
,NR547 Week 3 Midterm Exam - Differential Diagnosis in Psychiatric-Mental Health Across the Lifespan
*Q3:* A PMHNP evaluates a 28-year-old male with new-onset psychosis. The patient has a family history of
schizophrenia, so the clinician immediately diagnoses schizophrenia spectrum disorder without considering
substance use, sleep deprivation, or autoimmune etiologies. Which cognitive bias is MOST likely influencing
this diagnostic formulation?
A. Availability heuristic.
B. Anchoring bias. *[CORRECT]*
C. Confirmation bias only.
D. Hindsight bias.
Correct Answer: B
Rationale: Anchoring bias occurs when a clinician fixates on the initial impression (here, the family history prompting
schizophrenia) and fails to adjust despite new or alternative data. The NR 547 curriculum highlights anchoring as a
leading cause of diagnostic error in psychiatric differential diagnosis. The availability heuristic (A) relies on recalled
cases rather than anchoring on a specific cue, confirmation bias (C) involves seeking only supportive evidence, and
hindsight bias (D) occurs after outcomes are known.
*Q4:* During a mental status examination, the PMHNP documents that a patient demonstrates constricted
affect, speaks in a soft, monotonous voice, and reports feeling 'empty' rather than sad. Which component of
the MSE captures these observations?
A. Cognition and insight.
B. Thought content and perception.
C. Mood and affect. *[CORRECT]*
D. Sensorium and attention.
Correct Answer: C
Rationale: Mood (the patient's subjective emotional state) and affect (the objective observable expression) are the
MSE components that capture reported emptiness and observable constricted, monotonous expression. The NR 547
curriculum and PMHNP differential diagnosis competencies require precise MSE terminology so that mood disorders
can be differentiated from anxiety, psychotic, and neurocognitive disorders. Cognition (A), thought content (B), and
sensorium (D) capture distinct domains.
*Q5:* Which of the following BEST defines 'diagnostic overshadowing' as it pertains to psychiatric
differential diagnosis across the lifespan?
A. Deliberately withholding a diagnosis to protect the patient from stigma.
B. Attributing all new clinical symptoms to a preexisting diagnosis, thereby missing comorbid
or alternative conditions. *[CORRECT]*
C. Diagnosing multiple conditions simultaneously when only one is present.
D. Deferring diagnosis until laboratory confirmation is obtained.
Correct Answer: B
Rationale: Diagnostic overshadowing occurs when a clinician attributes new symptoms to an established diagnosis
(e.g., attributing abdominal pain in an adult with intellectual disability to 'behavioral issues') and fails to investigate
alternative or comorbid conditions. The NR 547 curriculum emphasizes this as a leading source of preventable
diagnostic error, particularly in patients with developmental disabilities, severe mental illness, and older adults.
Options A, C, and D describe other clinical behaviors, not overshadowing.
Chamberlain University | NR 547 Practicum | 2026/2027 Edition Page 2
,NR547 Week 3 Midterm Exam - Differential Diagnosis in Psychiatric-Mental Health Across the Lifespan
*Q6:* A 35-year-old female with a history of childhood sexual abuse presents for an initial psychiatric
evaluation. She becomes visibly tense when asked routine intake questions and reports that she 'does not
like feeling trapped in small rooms.' Which trauma-informed care approach is MOST appropriate at this point
in the assessment?
A. Continue the full structured interview without modification to ensure diagnostic completeness.
B. Pause the interview, explain the rationale for sensitive questions, offer choice and control,
and proceed only with explicit permission. *[CORRECT]*
C. Discontinue the assessment entirely and refer to trauma-focused therapy before establishing any
diagnosis.
D. Administer the ACE questionnaire immediately to quantify trauma exposure.
Correct Answer: B
Rationale: Trauma-informed care emphasizes safety, trustworthiness, choice, collaboration, and empowerment.
Pausing, explaining rationale, and proceeding only with consent respects autonomy and prevents re-traumatization
while still enabling diagnostic formulation. The NR 547 curriculum and SAMHSA trauma-informed principles require
that clinicians adapt structured interviewing to trauma histories. Continuing unchanged (A) risks re-traumatization,
immediate referral (C) skips diagnostic assessment, and immediate ACE administration (D) ignores the patient's
acute distress.
*Q7:* A 50-year-old immigrant male from a collectivist cultural background presents with somatic
complaints, fatigue, and reports that his 'heart is heavy.' He denies depressed mood but meets criteria on
the PHQ-9. Which DSM-5 cultural formulation component is MOST directly relevant to interpreting these
symptoms?
A. The cultural concepts of distress domain of the Cultural Formulation Interview. *[CORRECT]*
B. The neurological soft signs examination.
C. The genetic risk and prognostic factors domain.
D. The Mini-Mental State Examination score.
Correct Answer: A
Rationale: The DSM-5 Cultural Formulation Interview (CFI) explicitly assesses cultural identity, cultural explanations
of distress, cultural stressors and supports, and cultural elements of the clinician-patient relationship. The 'cultural
concepts of distress' domain explains idioms such as 'heavy heart' and somatic presentation that may not map to
Western mood constructs. The NR 547 curriculum requires PMHNPs to apply the CFI to avoid pathologizing
culturally normative expressions. Options B, C, and D address unrelated domains.
*Q8:* A patient scores 14 on the PHQ-9. Which interpretation aligns with the validated cutoff scoring for this
instrument?
A. Minimal or no depressive symptoms.
B. Mild depression.
C. Moderate depression. *[CORRECT]*
D. Severe depression.
Correct Answer: C
Rationale: The validated PHQ-9 cutoffs are: 0-4 minimal, 5-9 mild, 10-14 moderate, 15-19 moderately severe, and
20-27 severe. A score of 14 falls in the moderate range and supports a probable diagnosis of major depressive
disorder when clinical correlation is present. The NR 547 curriculum requires PMHNPs to interpret screening
instruments accurately to drive differential diagnosis. The other options misclassify the score.
Chamberlain University | NR 547 Practicum | 2026/2027 Edition Page 3
, NR547 Week 3 Midterm Exam - Differential Diagnosis in Psychiatric-Mental Health Across the Lifespan
*Q9:* A 19-year-old male presents to the emergency department after his roommate found him with a
ligature. He reports a recent breakup and a one-week history of depressed mood, anhedonia, and insomnia.
He denies active suicidal intent but describes passive ideation. Which structured risk assessment should the
PMHNP prioritize to stratify risk?
A. Hamilton Depression Rating Scale (HAM-D).
B. Columbia-Suicide Severity Rating Scale (C-SSRS). *[CORRECT]*
C. Generalized Anxiety Disorder-7 (GAD-7).
D. Mini-Mental State Examination (MMSE).
Correct Answer: B
Rationale: The C-SSRS is the validated structured instrument for stratifying suicide risk by ideation severity, intensity,
and behavior, including aborted and interrupted attempts. The NR 547 curriculum and PMHNP competencies require
its use in acute presentations. The HAM-D (A) measures depressive symptom severity but not suicide risk
specifically, the GAD-7 (C) screens for anxiety, and the MMSE (D) screens for cognitive impairment, none of which
stratify acute suicide risk.
*Q10:* A 56-year-old female with treatment-resistant depression, chronic pain, and type 2 diabetes reports
continued depressive symptoms despite trials of two SSRIs and one SNRI. She has not responded to
optimized antidepressant therapy. Which interdisciplinary referral is MOST appropriate to support the
differential diagnosis and treatment planning process?
A. Referral to a pain specialist, endocrinologist, and pharmacist for collaborative medication
review, with consideration of ECT evaluation by a psychiatrist. *[CORRECT]*
B. Referral to a podiatrist only.
C. Self-management without further specialist involvement.
D. Referral to optometry for vision screening.
Correct Answer: A
Rationale: Interdisciplinary collaboration is a core PMHNP competency under AACN Essentials and the NR 547
curriculum. Treatment-resistant depression with comorbid chronic pain and diabetes warrants collaborative review by
a pain specialist, endocrinologist, and pharmacist, plus evaluation for neuromodulation such as ECT or TMS. The
other options fail to address the complex biopsychosocial contributors that maintain depressive symptoms.
*Q11:* Which documentation element is REQUIRED when recording a differential diagnosis formulation in
the psychiatric-mental health setting per AACN Essentials and PMHNP competencies?
A. A single most likely diagnosis without listing alternatives.
B. The differential diagnoses considered, the supporting and refuting evidence for each, and
the clinical reasoning supporting the primary working diagnosis. *[CORRECT]*
C. Only the ICD-10 code without narrative explanation.
D. The patient's insurance information only.
Correct Answer: B
Rationale: AACN Essentials and PMHNP documentation standards require that differential diagnoses, supporting
and refuting evidence, and clinical reasoning be explicitly documented so that other clinicians can follow the
diagnostic logic and reassess as data evolve. A single diagnosis (A), ICD-10 code alone (C), and insurance
information (D) all fail to meet standards for clinical documentation of reasoning.
Chamberlain University | NR 547 Practicum | 2026/2027 Edition Page 4
