Walden University
LANIF • 5666
WU College of Nursing — PMHNP Program
E D U C AT I O N F O R G O O D
EST. 1970
NRNP 6665 — Week 11 Final Exam
P M H N P C A R E A C R O SS T H E L I F E S PA N I I — I N T E L L E C T U A L D I S A B I L I TY
INSTITUTION Walden University EXAM CODE NRNP-6665-FINAL-2026
PROGRAM MSN/PMHNP — Psychiatric-Mental Health ACADEMIC YEAR
Nurse Practitioner
EXAM TITLE NRNP 6665 Week 11 Final Examination TOTAL QUESTIONS 25 Questions
COURSE TITLE PMHNP Care Across the Lifespan II FORMAT Multiple Choice — Select the Single Best
Answer
EXAMINATION INSTRUCTIONS
▸ Select the single best answer for each question.
▸ Questions cover intellectual disability per DSM-5-TR criteria: signs and symptoms, differential diagnoses, incidence, etiology,
prognosis, cultural considerations, pharmacological and nonpharmacological treatments, diagnostics, comorbidities,
legal/ethical considerations, and patient education.
▸ Distinguish carefully between mild, moderate, and severe intellectual disability prognoses and treatment approaches.
▸ Correct answers and detailed rationales appear below each question for comprehensive review.
▸ All content is derived from NRNP 6665 Week 11 Final Exam curriculum (Lee et al., 2023; Boat et al., 2015; Pillinger et al., 2023;
Chepkirui et al., 2023).
SECTION I — INTELLECTUAL DISABILITY: DSM-5-TR CRITERIA, Questions 1
ASSESSMENT & MANAGEMENT – 25
1. According to the DSM-5-TR, intellectual disability is characterized by deficits in which two core domains?
A. Social communication and restricted/repetitive behaviors
B. Intellectual functioning and adaptive functioning
C. Mood regulation and impulse control
D. Attention span and hyperactivity levels
CORRECT ANSWER B — Intellectual functioning and adaptive functioning
RATIONALE Per DSM-5-TR (Lee et al., 2023), intellectual disability requires deficits in both intellectual functioning
(reasoning, problem-solving, abstract thinking, academic learning) AND adaptive functioning (daily living
skills, communication, social participation). Option A describes autism spectrum disorder criteria, not
intellectual disability.
, 2. According to the DSM-5-TR, the onset of intellectual disability must occur:
A. Before the age of 5
B. Before the age of 12
C. Before the age of 18
D. Before the age of 22
CORRECT ANSWER D — Before the age of 22
RATIONALE DSM-5-TR specifies that intellectual disability is a neurodevelopmental disorder with onset during the
developmental period, defined as before age 22 (Lee et al., 2023). This distinguishes it from cognitive
impairments acquired later in life (e.g., traumatic brain injury, dementia).
3. Which of the following is included in the differential diagnoses for intellectual disability?
A. Bipolar I disorder and schizophrenia
B. Child abuse, debilitating medical diseases, cerebral palsy, sensory disability, and speech disorder
C. Generalized anxiety disorder and panic disorder
D. Substance use disorder and gambling disorder
CORRECT ANSWER B — Child abuse, debilitating medical diseases, cerebral palsy, sensory disability, and speech disorder
RATIONALE Per Lee et al. (2023), differential diagnoses include conditions that can mimic or co-occur with intellectual
disability: child abuse (neglect can impair development), debilitating medical diseases, cerebral palsy (motor
deficits may be mistaken for cognitive deficits), sensory disabilities (hearing/vision impairment affecting
testing), and speech disorders (isolated communication deficits).
4. The incidence of intellectual disability peaks between which ages?
A. Birth to 2 years old
B. 3 to 6 years old
C. 10 to 14 years old
D. 18 to 22 years old
CORRECT ANSWER C — 10 to 14 years old
RATIONALE Lee et al. (2023) note that identification of intellectual disability peaks between ages 10–14, when academic
and social demands increase significantly and deficits in intellectual and adaptive functioning become more
apparent. Earlier identification is possible but less common for milder cases.
5. Intellectual disability is approximately how many times more prevalent in males versus females?
A. Equal prevalence in males and females
B. 1.5 times more prevalent in males
C. 2 times more prevalent in females
D. 3 times more prevalent in males
CORRECT ANSWER B — 1.5 times more prevalent in males
RATIONALE According to Lee et al. (2023), intellectual disability is 1.5 times more prevalent in males compared to females.
This male predominance is partly attributed to X-linked genetic conditions (e.g., Fragile X syndrome) that
disproportionately affect males.
LANIF • 5666
WU College of Nursing — PMHNP Program
E D U C AT I O N F O R G O O D
EST. 1970
NRNP 6665 — Week 11 Final Exam
P M H N P C A R E A C R O SS T H E L I F E S PA N I I — I N T E L L E C T U A L D I S A B I L I TY
INSTITUTION Walden University EXAM CODE NRNP-6665-FINAL-2026
PROGRAM MSN/PMHNP — Psychiatric-Mental Health ACADEMIC YEAR
Nurse Practitioner
EXAM TITLE NRNP 6665 Week 11 Final Examination TOTAL QUESTIONS 25 Questions
COURSE TITLE PMHNP Care Across the Lifespan II FORMAT Multiple Choice — Select the Single Best
Answer
EXAMINATION INSTRUCTIONS
▸ Select the single best answer for each question.
▸ Questions cover intellectual disability per DSM-5-TR criteria: signs and symptoms, differential diagnoses, incidence, etiology,
prognosis, cultural considerations, pharmacological and nonpharmacological treatments, diagnostics, comorbidities,
legal/ethical considerations, and patient education.
▸ Distinguish carefully between mild, moderate, and severe intellectual disability prognoses and treatment approaches.
▸ Correct answers and detailed rationales appear below each question for comprehensive review.
▸ All content is derived from NRNP 6665 Week 11 Final Exam curriculum (Lee et al., 2023; Boat et al., 2015; Pillinger et al., 2023;
Chepkirui et al., 2023).
SECTION I — INTELLECTUAL DISABILITY: DSM-5-TR CRITERIA, Questions 1
ASSESSMENT & MANAGEMENT – 25
1. According to the DSM-5-TR, intellectual disability is characterized by deficits in which two core domains?
A. Social communication and restricted/repetitive behaviors
B. Intellectual functioning and adaptive functioning
C. Mood regulation and impulse control
D. Attention span and hyperactivity levels
CORRECT ANSWER B — Intellectual functioning and adaptive functioning
RATIONALE Per DSM-5-TR (Lee et al., 2023), intellectual disability requires deficits in both intellectual functioning
(reasoning, problem-solving, abstract thinking, academic learning) AND adaptive functioning (daily living
skills, communication, social participation). Option A describes autism spectrum disorder criteria, not
intellectual disability.
, 2. According to the DSM-5-TR, the onset of intellectual disability must occur:
A. Before the age of 5
B. Before the age of 12
C. Before the age of 18
D. Before the age of 22
CORRECT ANSWER D — Before the age of 22
RATIONALE DSM-5-TR specifies that intellectual disability is a neurodevelopmental disorder with onset during the
developmental period, defined as before age 22 (Lee et al., 2023). This distinguishes it from cognitive
impairments acquired later in life (e.g., traumatic brain injury, dementia).
3. Which of the following is included in the differential diagnoses for intellectual disability?
A. Bipolar I disorder and schizophrenia
B. Child abuse, debilitating medical diseases, cerebral palsy, sensory disability, and speech disorder
C. Generalized anxiety disorder and panic disorder
D. Substance use disorder and gambling disorder
CORRECT ANSWER B — Child abuse, debilitating medical diseases, cerebral palsy, sensory disability, and speech disorder
RATIONALE Per Lee et al. (2023), differential diagnoses include conditions that can mimic or co-occur with intellectual
disability: child abuse (neglect can impair development), debilitating medical diseases, cerebral palsy (motor
deficits may be mistaken for cognitive deficits), sensory disabilities (hearing/vision impairment affecting
testing), and speech disorders (isolated communication deficits).
4. The incidence of intellectual disability peaks between which ages?
A. Birth to 2 years old
B. 3 to 6 years old
C. 10 to 14 years old
D. 18 to 22 years old
CORRECT ANSWER C — 10 to 14 years old
RATIONALE Lee et al. (2023) note that identification of intellectual disability peaks between ages 10–14, when academic
and social demands increase significantly and deficits in intellectual and adaptive functioning become more
apparent. Earlier identification is possible but less common for milder cases.
5. Intellectual disability is approximately how many times more prevalent in males versus females?
A. Equal prevalence in males and females
B. 1.5 times more prevalent in males
C. 2 times more prevalent in females
D. 3 times more prevalent in males
CORRECT ANSWER B — 1.5 times more prevalent in males
RATIONALE According to Lee et al. (2023), intellectual disability is 1.5 times more prevalent in males compared to females.
This male predominance is partly attributed to X-linked genetic conditions (e.g., Fragile X syndrome) that
disproportionately affect males.
