Final Exam NRNP6635 / NRNP 6635 (Latest 2026/2027): Psychopathology and Diagnostic Reasoning - Grade A-Walden 2026/2027 2026/2027 | Page 1 | Passing Score: 80%
WALDEN UNIVERSITY
Final Exam NRNP6635 / NRNP 6635 (Latest 2026/2027): Psychopathology
and Diagnostic Reasoning - Grade A-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-Q20
Section 2 Diagnostic Classification and Assessment Q21-Q40
Section 3 Mood, Anxiety, and Trauma-Related Disorders Q41-Q60
Section 4 Psychotic, Personality, and Substance Use Disorders Q61-Q80
Section 5 Special Populations and Treatment Considerations Q81-Q100
Instructions: Select the single best answer for each question. This exam is designed for NRNP 6635 Psychopathology and
Diagnostic Reasoning final exam preparation. Passing score: 80% (80 questions correct).
al Exam NRNP6635 / NRNP 6635 (Latest 2026/2027): Psychopathology and Diagnostic Reasoning - Grade A-Walden 2026/2027 - 2026/2027 | Passing Score: 80% | Page 1 of {TOTA
, SECTION 1 | Neurobiological Foundations of Psychopathology | Q1-Q20 | Final Exam NRNP6635 / NRNP 6635 (Latest 2026/2027):
Psychopathology and Diagnostic Reasoning - Grade A-Walden 2026/2027 2026/2027
Q1 Question 1 of 100
A 34-year-old man presents with chronic auditory hallucinations and disorganized thinking. MRI
reveals enlarged ventricles and reduced gray matter volume in the prefrontal cortex. Which
neurotransmitter pathway is most implicated in the positive symptoms of his condition?
A. Mesolimbic dopamine pathway
B. Nigrostriatal dopamine pathway
C. Mesocortical dopamine pathway
D. Tuberoinfundibular dopamine pathway
Correct Answer: A
Rationale:
The mesolimbic dopamine pathway is hyperactive in schizophrenia and is primarily responsible for positive
symptoms such as hallucinations and delusions. The mesocortical pathway is associated with negative and
cognitive symptoms due to hypoactivity, while the nigrostriatal pathway mediates motor control.
Q2 Question 2 of 100
A 28-year-old woman with major depressive disorder shows elevated cortisol levels on laboratory
testing. Dysregulation of which neuroendocrine axis is most closely associated with her condition?
A. Hypothalamic-pituitary-thyroid axis
B. Hypothalamic-pituitary-adrenal axis
C. Hypothalamic-pituitary-gonadal axis
D. Somatotropic axis
Correct Answer: B
Rationale:
The hypothalamic-pituitary-adrenal (HPA) axis is hyperactive in major depressive disorder, leading to elevated
cortisol levels. This hypercortisolemia contributes to neurotoxic effects in the hippocampus and impaired
feedback inhibition. The HPT axis is less consistently involved.
al Exam NRNP6635 / NRNP 6635 (Latest 2026/2027): Psychopathology and Diagnostic Reasoning - Grade A-Walden 2026/2027 - 2026/2027 | Passing Score: 80% | Page 2 of {TOTA
, Q3 Question 3 of 100
A 42-year-old man with generalized anxiety disorder demonstrates heightened amygdala reactivity on
functional MRI. The amygdala receives primary modulatory input from which brain region that is
typically hypoactive in anxiety disorders?
A. Cerebellum
B. Basal ganglia
C. Prefrontal cortex
D. Thalamus
Correct Answer: C
Rationale:
The prefrontal cortex provides top-down inhibitory control over the amygdala and is typically hypoactive in
anxiety disorders, leading to inadequate regulation of fear responses. The thalamus relays sensory
information to the amygdala but does not provide the same modulatory function.
Q4 Question 4 of 100
A 55-year-old man with a 30-year history of alcohol use disorder presents with significant memory
impairment and confabulation. Which brain structure is most likely damaged in this condition?
A. Hippocampus
B. Frontal cortex
C. Cerebellar vermis
D. Mammillary bodies
Correct Answer: D
Rationale:
Wernicke-Korsakoff syndrome, caused by thiamine deficiency in chronic alcohol use, primarily damages the
mammillary bodies and medial thalamus, leading to the anterograde amnesia and confabulation characteristic
of Korsakoff psychosis. Hippocampal damage occurs in Alzheimer disease.
Q5 Question 5 of 100
A 19-year-old man with first-episode psychosis demonstrates reduced NMDA receptor activity in his
prefrontal cortex. Which theory of schizophrenia is supported by this finding?
A. Glutamate hypothesis
B. Dopamine hypothesis
C. Serotonin hypothesis
D. GABA hypothesis
Correct Answer: A
al Exam NRNP6635 / NRNP 6635 (Latest 2026/2027): Psychopathology and Diagnostic Reasoning - Grade A-Walden 2026/2027 - 2026/2027 | Passing Score: 80% | Page 3 of {TOTA
, Rationale:
The glutamate hypothesis of schizophrenia proposes that NMDA receptor hypofunction contributes to both
positive and negative symptoms. This is supported by the observation that NMDA antagonists like PCP
produce schizophrenia-like symptoms. The dopamine hypothesis focuses on dopaminergic hyperactivity.
Q6 Question 6 of 100
A 65-year-old woman with late-onset depression exhibits white matter hyperintensities on MRI. This
finding is most consistent with which subtype of depression?
A. Melancholic depression
B. Vascular depression
C. Atypical depression
D. Seasonal depression
Correct Answer: B
Rationale:
White matter hyperintensities on MRI in elderly patients with depression are characteristic of vascular
depression, which results from cerebrovascular disease disrupting frontostriatal circuits. Melancholic
depression is characterized by distinct neurovegetative features, not structural brain changes.
Q7 Question 7 of 100
A researcher is studying the role of brain-derived neurotrophic factor (BDNF) in mood disorders.
Reduced BDNF levels have been consistently associated with which condition?
A. Schizophrenia
B. Autism spectrum disorder
C. Major depressive disorder
D. ADHD
Correct Answer: C
Rationale:
Reduced BDNF levels are consistently found in patients with major depressive disorder and are normalized by
effective antidepressant treatment. BDNF supports neuronal survival and synaptic plasticity, and its deficiency
contributes to hippocampal atrophy seen in depression.
al Exam NRNP6635 / NRNP 6635 (Latest 2026/2027): Psychopathology and Diagnostic Reasoning - Grade A-Walden 2026/2027 - 2026/2027 | Passing Score: 80% | Page 4 of {TOTA
WALDEN UNIVERSITY
Final Exam NRNP6635 / NRNP 6635 (Latest 2026/2027): Psychopathology
and Diagnostic Reasoning - Grade A-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-Q20
Section 2 Diagnostic Classification and Assessment Q21-Q40
Section 3 Mood, Anxiety, and Trauma-Related Disorders Q41-Q60
Section 4 Psychotic, Personality, and Substance Use Disorders Q61-Q80
Section 5 Special Populations and Treatment Considerations Q81-Q100
Instructions: Select the single best answer for each question. This exam is designed for NRNP 6635 Psychopathology and
Diagnostic Reasoning final exam preparation. Passing score: 80% (80 questions correct).
al Exam NRNP6635 / NRNP 6635 (Latest 2026/2027): Psychopathology and Diagnostic Reasoning - Grade A-Walden 2026/2027 - 2026/2027 | Passing Score: 80% | Page 1 of {TOTA
, SECTION 1 | Neurobiological Foundations of Psychopathology | Q1-Q20 | Final Exam NRNP6635 / NRNP 6635 (Latest 2026/2027):
Psychopathology and Diagnostic Reasoning - Grade A-Walden 2026/2027 2026/2027
Q1 Question 1 of 100
A 34-year-old man presents with chronic auditory hallucinations and disorganized thinking. MRI
reveals enlarged ventricles and reduced gray matter volume in the prefrontal cortex. Which
neurotransmitter pathway is most implicated in the positive symptoms of his condition?
A. Mesolimbic dopamine pathway
B. Nigrostriatal dopamine pathway
C. Mesocortical dopamine pathway
D. Tuberoinfundibular dopamine pathway
Correct Answer: A
Rationale:
The mesolimbic dopamine pathway is hyperactive in schizophrenia and is primarily responsible for positive
symptoms such as hallucinations and delusions. The mesocortical pathway is associated with negative and
cognitive symptoms due to hypoactivity, while the nigrostriatal pathway mediates motor control.
Q2 Question 2 of 100
A 28-year-old woman with major depressive disorder shows elevated cortisol levels on laboratory
testing. Dysregulation of which neuroendocrine axis is most closely associated with her condition?
A. Hypothalamic-pituitary-thyroid axis
B. Hypothalamic-pituitary-adrenal axis
C. Hypothalamic-pituitary-gonadal axis
D. Somatotropic axis
Correct Answer: B
Rationale:
The hypothalamic-pituitary-adrenal (HPA) axis is hyperactive in major depressive disorder, leading to elevated
cortisol levels. This hypercortisolemia contributes to neurotoxic effects in the hippocampus and impaired
feedback inhibition. The HPT axis is less consistently involved.
al Exam NRNP6635 / NRNP 6635 (Latest 2026/2027): Psychopathology and Diagnostic Reasoning - Grade A-Walden 2026/2027 - 2026/2027 | Passing Score: 80% | Page 2 of {TOTA
, Q3 Question 3 of 100
A 42-year-old man with generalized anxiety disorder demonstrates heightened amygdala reactivity on
functional MRI. The amygdala receives primary modulatory input from which brain region that is
typically hypoactive in anxiety disorders?
A. Cerebellum
B. Basal ganglia
C. Prefrontal cortex
D. Thalamus
Correct Answer: C
Rationale:
The prefrontal cortex provides top-down inhibitory control over the amygdala and is typically hypoactive in
anxiety disorders, leading to inadequate regulation of fear responses. The thalamus relays sensory
information to the amygdala but does not provide the same modulatory function.
Q4 Question 4 of 100
A 55-year-old man with a 30-year history of alcohol use disorder presents with significant memory
impairment and confabulation. Which brain structure is most likely damaged in this condition?
A. Hippocampus
B. Frontal cortex
C. Cerebellar vermis
D. Mammillary bodies
Correct Answer: D
Rationale:
Wernicke-Korsakoff syndrome, caused by thiamine deficiency in chronic alcohol use, primarily damages the
mammillary bodies and medial thalamus, leading to the anterograde amnesia and confabulation characteristic
of Korsakoff psychosis. Hippocampal damage occurs in Alzheimer disease.
Q5 Question 5 of 100
A 19-year-old man with first-episode psychosis demonstrates reduced NMDA receptor activity in his
prefrontal cortex. Which theory of schizophrenia is supported by this finding?
A. Glutamate hypothesis
B. Dopamine hypothesis
C. Serotonin hypothesis
D. GABA hypothesis
Correct Answer: A
al Exam NRNP6635 / NRNP 6635 (Latest 2026/2027): Psychopathology and Diagnostic Reasoning - Grade A-Walden 2026/2027 - 2026/2027 | Passing Score: 80% | Page 3 of {TOTA
, Rationale:
The glutamate hypothesis of schizophrenia proposes that NMDA receptor hypofunction contributes to both
positive and negative symptoms. This is supported by the observation that NMDA antagonists like PCP
produce schizophrenia-like symptoms. The dopamine hypothesis focuses on dopaminergic hyperactivity.
Q6 Question 6 of 100
A 65-year-old woman with late-onset depression exhibits white matter hyperintensities on MRI. This
finding is most consistent with which subtype of depression?
A. Melancholic depression
B. Vascular depression
C. Atypical depression
D. Seasonal depression
Correct Answer: B
Rationale:
White matter hyperintensities on MRI in elderly patients with depression are characteristic of vascular
depression, which results from cerebrovascular disease disrupting frontostriatal circuits. Melancholic
depression is characterized by distinct neurovegetative features, not structural brain changes.
Q7 Question 7 of 100
A researcher is studying the role of brain-derived neurotrophic factor (BDNF) in mood disorders.
Reduced BDNF levels have been consistently associated with which condition?
A. Schizophrenia
B. Autism spectrum disorder
C. Major depressive disorder
D. ADHD
Correct Answer: C
Rationale:
Reduced BDNF levels are consistently found in patients with major depressive disorder and are normalized by
effective antidepressant treatment. BDNF supports neuronal survival and synaptic plasticity, and its deficiency
contributes to hippocampal atrophy seen in depression.
al Exam NRNP6635 / NRNP 6635 (Latest 2026/2027): Psychopathology and Diagnostic Reasoning - Grade A-Walden 2026/2027 - 2026/2027 | Passing Score: 80% | Page 4 of {TOTA
