NRNP 6635 PSYCHOPATHOLOGY AND
DIAGNOSTIC REASONING
COMPREHENSIVE EXAM QUESTIONS
AND ANSWERS
1. Which dopamine pathway is primarily associated with the negative and cognitive
symptoms of schizophrenia?
A. Mesocortical pathway
B. Mesolimbic pathway
C. Nigrostriatal pathway
D. Tuberoinfundibular pathway
Answer: A
Conceptual Explanation: The mesocortical pathway projects to the prefrontal cortex;
hypofunction in this area is linked to negative and cognitive symptoms. In contrast,
mesolimbic overactivity is linked to positive symptoms.
,2. According to the DSM-5, what is the minimum duration of symptoms required for a
diagnosis of Schizophrenia?
A. 1 month
B. 3 months
C. 12 months
D. 6 months
Answer: D
Conceptual Explanation: A diagnosis of Schizophrenia requires continuous signs of the
disturbance for at least 6 months, including at least 1 month of active-phase symptoms.
3. In patients with Major Depressive Disorder, which brain region often shows reduced
volume and impaired neuroplasticity?
A. Basal ganglia
B. Hippocampus
C. Occipital lobe
D. Pons
Answer: B
Conceptual Explanation: The hippocampus is frequently associated with volume
reduction in chronic depression, likely due to elevated cortisol and reduced brain-derived
neurotrophic factor (BDNF).
, 4. Lithium is known to have a narrow therapeutic index. What is the typical therapeutic range
for serum lithium levels in the maintenance phase?
A. 0.1 - 0.5 mEq/L
B. 1.5 - 2.0 mEq/L
C. 0.6 - 1.2 mEq/L
D. 2.5 - 3.0 mEq/L
Answer: C
Conceptual Explanation: The standard therapeutic range for maintenance treatment with
lithium is generally 0.6 to 1.2 mEq/L. Levels above 1.5 mEq/L are often considered toxic.
5. Which personality disorder is characterized by a pervasive pattern of detachment from
social relationships and a restricted range of expression of emotions in interpersonal
settings?
A. Avoidant Personality Disorder
B. Schizoid Personality Disorder
C. Schizotypal Personality Disorder
D. Antisocial Personality Disorder
Answer: B
DIAGNOSTIC REASONING
COMPREHENSIVE EXAM QUESTIONS
AND ANSWERS
1. Which dopamine pathway is primarily associated with the negative and cognitive
symptoms of schizophrenia?
A. Mesocortical pathway
B. Mesolimbic pathway
C. Nigrostriatal pathway
D. Tuberoinfundibular pathway
Answer: A
Conceptual Explanation: The mesocortical pathway projects to the prefrontal cortex;
hypofunction in this area is linked to negative and cognitive symptoms. In contrast,
mesolimbic overactivity is linked to positive symptoms.
,2. According to the DSM-5, what is the minimum duration of symptoms required for a
diagnosis of Schizophrenia?
A. 1 month
B. 3 months
C. 12 months
D. 6 months
Answer: D
Conceptual Explanation: A diagnosis of Schizophrenia requires continuous signs of the
disturbance for at least 6 months, including at least 1 month of active-phase symptoms.
3. In patients with Major Depressive Disorder, which brain region often shows reduced
volume and impaired neuroplasticity?
A. Basal ganglia
B. Hippocampus
C. Occipital lobe
D. Pons
Answer: B
Conceptual Explanation: The hippocampus is frequently associated with volume
reduction in chronic depression, likely due to elevated cortisol and reduced brain-derived
neurotrophic factor (BDNF).
, 4. Lithium is known to have a narrow therapeutic index. What is the typical therapeutic range
for serum lithium levels in the maintenance phase?
A. 0.1 - 0.5 mEq/L
B. 1.5 - 2.0 mEq/L
C. 0.6 - 1.2 mEq/L
D. 2.5 - 3.0 mEq/L
Answer: C
Conceptual Explanation: The standard therapeutic range for maintenance treatment with
lithium is generally 0.6 to 1.2 mEq/L. Levels above 1.5 mEq/L are often considered toxic.
5. Which personality disorder is characterized by a pervasive pattern of detachment from
social relationships and a restricted range of expression of emotions in interpersonal
settings?
A. Avoidant Personality Disorder
B. Schizoid Personality Disorder
C. Schizotypal Personality Disorder
D. Antisocial Personality Disorder
Answer: B
