NRNP6635 / NRNP 6635 (Latest 2026/2027): Midterm Exam Study Guide - Psychopathology and Diagnostic Reasoning - Walden 2026/2027 2026/2027 | Page 1 |
Passing Score: 80%
WALDEN UNIVERSITY
NRNP6635 / NRNP 6635 (Latest 2026/2027): Midterm Exam Study Guide -
Psychopathology and Diagnostic Reasoning - Walden 2026/2027
PSYCHOPATHOLOGY & DIAGNOSTIC REASONING · Official Exam 2026/2027
100 80% CERTIFIED
QUESTIONS PASSING SCORE RECERTIFICATION
TABLE OF CONTENTS
Section 1 Neurobiological Foundations of Psychopathology Q1-Q22
Section 2 Diagnostic Classification and Assessment (DSM-5-TR) Q23-Q42
Section 3 Mood Disorders and Anxiety Disorders Q43-Q62
Section 4 Psychotic Disorders and Substance Use Disorders Q63-Q82
Section 5 Personality Disorders and Special Populations Q83-Q100
Instructions: Select the single best answer for each question. This exam is designed for NRNP 6635 Psychopathology
and Diagnostic Reasoning midterm exam study guide preparation. Passing score: 80% (80 questions correct).
,SECTION 1 | Neurobiological Foundations of Psychopathology | Q1-Q22 | NRNP6635 / NRNP 6635 (Latest 2026/2027): Midterm Exam Study Guid
Q1 Question 1 of 100
A 34-year-old male with schizophrenia shows poor response to typical antipsychotics. The PMHNP
explains that the neurobiological basis of schizophrenia involves the dopamine hypothesis, which posits
that positive symptoms arise from dopaminergic hyperactivity primarily in which pathway?
A. Mesolimbic pathway
B. Nigrostriatal pathway
C. Mesocortical pathway
D. Tuberoinfundibular pathway
Correct Answer: A
Rationale:
The mesolimbic pathway is associated with positive symptoms of schizophrenia due to excessive dopaminergic
activity. The nigrostriatal pathway mediates motor function, the mesocortical pathway is linked to negative
symptoms from hypoactivity, and the tuberoinfundibular pathway regulates prolactin secretion.
Q2 Question 2 of 100
A 28-year-old female with major depressive disorder has elevated inflammatory markers including IL-6
and TNF-alpha. The PMHNP considers the cytokine hypothesis of depression, which proposes that
peripheral inflammation affects mood through which neurobiological mechanism?
A. Activation of microglia and subsequent disruption of serotonin metabolism in the brain
B. Direct stimulation of the sympathetic nervous system causing tachycardia
C. Inhibition of the hypothalamic-pituitary-adrenal axis reducing cortisol
D. Enhancement of GABAergic transmission causing sedation
Correct Answer: B
Rationale:
The cytokine hypothesis proposes that peripheral inflammatory cytokines cross the blood-brain barrier, activate
microglia, and disrupt serotonin metabolism through the kynurenine pathway, leading to depressive symptoms.
Direct sympathetic stimulation and GABA enhancement are not part of this mechanism.
NRNP6635 / NRNP 6635 (Latest 2026/2027): Midterm Exam Study Guide - Psychopathology and Diagnostic Reasoning - Walden 2026/2027 -- 2026/2027 |
Passing Score: 80% | Page 2 of 2
,SECTION 1 | Neurobiological Foundations of Psychopathology | Q1-Q22 | NRNP6635 / NRNP 6635 (Latest 2026/2027): Midterm Exam Study Guid
Q3 Question 3 of 100
A 45-year-old male with generalized anxiety disorder has persistent worry and autonomic hyperarousal.
Neuroimaging reveals hyperactivity in the amygdala. The PMHNP explains that the amygdala plays a
central role in fear processing by sending projections to which brain region that mediates the autonomic
and endocrine stress response?
A. Hypothalamus
B. Hippocampus
C. Cerebellum
D. Prefrontal cortex
Correct Answer: D
Rationale:
The amygdala sends efferent projections to the hypothalamus, which orchestrates the autonomic and endocrine
stress response through the HPA axis and sympathetic nervous system. The hippocampus contextualizes fear
memories, the prefrontal cortex modulates fear responses, and the cerebellum coordinates motor output.
Q4 Question 4 of 100
A 52-year-old female with bipolar I disorder is in a manic episode. The PMHNP understands that the
pathophysiology of mania is most closely associated with increased activity in which neurotransmitter
system?
A. Norepinephrine and dopamine systems
B. GABA and serotonin systems
C. Glycine and histamine systems
D. Acetylcholine and glutamate systems
Correct Answer: C
Rationale:
Mania is most closely associated with increased activity in norepinephrine and dopamine systems. Medications
that increase these neurotransmitters can precipitate mania, while mood stabilizers like lithium modulate their
activity. GABA is inhibitory and serotonin is more linked to depression.
NRNP6635 / NRNP 6635 (Latest 2026/2027): Midterm Exam Study Guide - Psychopathology and Diagnostic Reasoning - Walden 2026/2027 -- 2026/2027 |
Passing Score: 80% | Page 3 of 3
, SECTION 1 | Neurobiological Foundations of Psychopathology | Q1-Q22 | NRNP6635 / NRNP 6635 (Latest 2026/2027): Midterm Exam Study Guid
Q5 Question 5 of 100
A 38-year-old male with treatment-resistant depression is being considered for ketamine therapy. The
PMHNP explains that ketamine produces rapid antidepressant effects primarily through antagonism of
which receptor?
A. 5-HT2A serotonin receptor
B. NMDA glutamate receptor
C. D2 dopamine receptor
D. GABA-A receptor
Correct Answer: B
Rationale:
Ketamine produces rapid antidepressant effects primarily through NMDA receptor antagonism, which increases
glutamate release and activates AMPA receptors, leading to increased brain-derived neurotrophic factor and
synaptic plasticity. This mechanism is distinct from traditional antidepressants.
Q6 Question 6 of 100
A 30-year-old female with PTSD has intrusive memories and hypervigilance. The PMHNP explains that
the neurobiology of PTSD involves failure of which brain region to adequately inhibit the amygdala's fear
response?
A. Hippocampus
B. Medial prefrontal cortex
C. Thalamus
D. Basal ganglia
Correct Answer: A
Rationale:
In PTSD, the medial prefrontal cortex (including the anterior cingulate cortex) fails to adequately inhibit the
amygdala, resulting in persistent hyperarousal and intrusive memories. The hippocampus shows volume
reduction in PTSD but its role is more related to contextual memory processing.
NRNP6635 / NRNP 6635 (Latest 2026/2027): Midterm Exam Study Guide - Psychopathology and Diagnostic Reasoning - Walden 2026/2027 -- 2026/2027 |
Passing Score: 80% | Page 4 of 4
Passing Score: 80%
WALDEN UNIVERSITY
NRNP6635 / NRNP 6635 (Latest 2026/2027): Midterm Exam Study Guide -
Psychopathology and Diagnostic Reasoning - Walden 2026/2027
PSYCHOPATHOLOGY & DIAGNOSTIC REASONING · Official Exam 2026/2027
100 80% CERTIFIED
QUESTIONS PASSING SCORE RECERTIFICATION
TABLE OF CONTENTS
Section 1 Neurobiological Foundations of Psychopathology Q1-Q22
Section 2 Diagnostic Classification and Assessment (DSM-5-TR) Q23-Q42
Section 3 Mood Disorders and Anxiety Disorders Q43-Q62
Section 4 Psychotic Disorders and Substance Use Disorders Q63-Q82
Section 5 Personality Disorders and Special Populations Q83-Q100
Instructions: Select the single best answer for each question. This exam is designed for NRNP 6635 Psychopathology
and Diagnostic Reasoning midterm exam study guide preparation. Passing score: 80% (80 questions correct).
,SECTION 1 | Neurobiological Foundations of Psychopathology | Q1-Q22 | NRNP6635 / NRNP 6635 (Latest 2026/2027): Midterm Exam Study Guid
Q1 Question 1 of 100
A 34-year-old male with schizophrenia shows poor response to typical antipsychotics. The PMHNP
explains that the neurobiological basis of schizophrenia involves the dopamine hypothesis, which posits
that positive symptoms arise from dopaminergic hyperactivity primarily in which pathway?
A. Mesolimbic pathway
B. Nigrostriatal pathway
C. Mesocortical pathway
D. Tuberoinfundibular pathway
Correct Answer: A
Rationale:
The mesolimbic pathway is associated with positive symptoms of schizophrenia due to excessive dopaminergic
activity. The nigrostriatal pathway mediates motor function, the mesocortical pathway is linked to negative
symptoms from hypoactivity, and the tuberoinfundibular pathway regulates prolactin secretion.
Q2 Question 2 of 100
A 28-year-old female with major depressive disorder has elevated inflammatory markers including IL-6
and TNF-alpha. The PMHNP considers the cytokine hypothesis of depression, which proposes that
peripheral inflammation affects mood through which neurobiological mechanism?
A. Activation of microglia and subsequent disruption of serotonin metabolism in the brain
B. Direct stimulation of the sympathetic nervous system causing tachycardia
C. Inhibition of the hypothalamic-pituitary-adrenal axis reducing cortisol
D. Enhancement of GABAergic transmission causing sedation
Correct Answer: B
Rationale:
The cytokine hypothesis proposes that peripheral inflammatory cytokines cross the blood-brain barrier, activate
microglia, and disrupt serotonin metabolism through the kynurenine pathway, leading to depressive symptoms.
Direct sympathetic stimulation and GABA enhancement are not part of this mechanism.
NRNP6635 / NRNP 6635 (Latest 2026/2027): Midterm Exam Study Guide - Psychopathology and Diagnostic Reasoning - Walden 2026/2027 -- 2026/2027 |
Passing Score: 80% | Page 2 of 2
,SECTION 1 | Neurobiological Foundations of Psychopathology | Q1-Q22 | NRNP6635 / NRNP 6635 (Latest 2026/2027): Midterm Exam Study Guid
Q3 Question 3 of 100
A 45-year-old male with generalized anxiety disorder has persistent worry and autonomic hyperarousal.
Neuroimaging reveals hyperactivity in the amygdala. The PMHNP explains that the amygdala plays a
central role in fear processing by sending projections to which brain region that mediates the autonomic
and endocrine stress response?
A. Hypothalamus
B. Hippocampus
C. Cerebellum
D. Prefrontal cortex
Correct Answer: D
Rationale:
The amygdala sends efferent projections to the hypothalamus, which orchestrates the autonomic and endocrine
stress response through the HPA axis and sympathetic nervous system. The hippocampus contextualizes fear
memories, the prefrontal cortex modulates fear responses, and the cerebellum coordinates motor output.
Q4 Question 4 of 100
A 52-year-old female with bipolar I disorder is in a manic episode. The PMHNP understands that the
pathophysiology of mania is most closely associated with increased activity in which neurotransmitter
system?
A. Norepinephrine and dopamine systems
B. GABA and serotonin systems
C. Glycine and histamine systems
D. Acetylcholine and glutamate systems
Correct Answer: C
Rationale:
Mania is most closely associated with increased activity in norepinephrine and dopamine systems. Medications
that increase these neurotransmitters can precipitate mania, while mood stabilizers like lithium modulate their
activity. GABA is inhibitory and serotonin is more linked to depression.
NRNP6635 / NRNP 6635 (Latest 2026/2027): Midterm Exam Study Guide - Psychopathology and Diagnostic Reasoning - Walden 2026/2027 -- 2026/2027 |
Passing Score: 80% | Page 3 of 3
, SECTION 1 | Neurobiological Foundations of Psychopathology | Q1-Q22 | NRNP6635 / NRNP 6635 (Latest 2026/2027): Midterm Exam Study Guid
Q5 Question 5 of 100
A 38-year-old male with treatment-resistant depression is being considered for ketamine therapy. The
PMHNP explains that ketamine produces rapid antidepressant effects primarily through antagonism of
which receptor?
A. 5-HT2A serotonin receptor
B. NMDA glutamate receptor
C. D2 dopamine receptor
D. GABA-A receptor
Correct Answer: B
Rationale:
Ketamine produces rapid antidepressant effects primarily through NMDA receptor antagonism, which increases
glutamate release and activates AMPA receptors, leading to increased brain-derived neurotrophic factor and
synaptic plasticity. This mechanism is distinct from traditional antidepressants.
Q6 Question 6 of 100
A 30-year-old female with PTSD has intrusive memories and hypervigilance. The PMHNP explains that
the neurobiology of PTSD involves failure of which brain region to adequately inhibit the amygdala's fear
response?
A. Hippocampus
B. Medial prefrontal cortex
C. Thalamus
D. Basal ganglia
Correct Answer: A
Rationale:
In PTSD, the medial prefrontal cortex (including the anterior cingulate cortex) fails to adequately inhibit the
amygdala, resulting in persistent hyperarousal and intrusive memories. The hippocampus shows volume
reduction in PTSD but its role is more related to contextual memory processing.
NRNP6635 / NRNP 6635 (Latest 2026/2027): Midterm Exam Study Guide - Psychopathology and Diagnostic Reasoning - Walden 2026/2027 -- 2026/2027 |
Passing Score: 80% | Page 4 of 4
