CDDN CERTIFIED DEVELOPMENTAL DISABILITIES NURSE EXAM STUDY GUIDE |
TESTBANK | PRACTICE QUESTIONS & ANSWERS | CERTIFICATION EXAM
PREPARATION | LATEST UPDATE 2026/2027 | ADVANCED REVIEW |
COMPREHENSIVE PRACTICE EXAM
Examiner:
Developmental Disabilities Nurses Association (DDNA)
TABLE OF CONTENTS
1. Foundations of Developmental Disabilities Nursing
2. Person-Centered Care Planning
3. Health Assessment and Clinical Decision-Making
4. Health Promotion and Disease Prevention
5. Medication Management
6. Behavioral and Mental Health Support
7. Ethical and Legal Responsibilities
8. Interdisciplinary Collaboration
9. Aging and Chronic Conditions in Developmental Disabilities
10. Emergency Care and Risk Management
11. Communication Strategies
12. Family Education and Advocacy
13. Documentation and Quality Improvement
14. Community-Based Nursing Practice
15. Professional Standards and Leadership
DEVELOPMENTAL DISABILITIES || PERSON-CENTERED CARE || HEALTH
ASSESSMENT || CARE COORDINATION || CLINICAL JUDGMENT || ETHICS ||
ADVOCACY || MEDICATION SAFETY || BEHAVIORAL SUPPORT ||
INTERDISCIPLINARY TEAM || QUALITY IMPROVEMENT || COMMUNITY NURSING ||
RISK MANAGEMENT || DOCUMENTATION || HEALTH PROMOTION ||
PROFESSIONAL PRACTICE
,QUESTION 1.
A nurse is developing a comprehensive care plan for an adult with an intellectual
disability who has recently transitioned from an institutional setting to community-
based living. Which action best demonstrates person-centered nursing practice?
A. Prioritizing interventions identified by the interdisciplinary team over the
individual's stated preferences.
B. Developing goals collaboratively with the individual while incorporating their
values, preferences, strengths, and informed choices.
C. Using standardized interventions for all individuals with similar diagnoses.
D. Focusing primarily on reducing healthcare costs through streamlined services.
🔴 Correct Answer: B. Developing goals collaboratively with the individual while
incorporating their values, preferences, strengths, and informed choices.
🔵 Explanation: Person-centered care emphasizes respecting the individual's
autonomy, preferences, strengths, and life goals while developing an individualized
plan of care. Standardized approaches or decisions driven solely by professionals or cost
considerations fail to recognize the unique needs and rights of the individual.
QUESTION 2.
During an annual health assessment, a nurse recognizes a subtle change in baseline
behavior in a nonverbal individual with developmental disabilities. What is the
nurse's most appropriate initial action?
A. Assume the behavior reflects progression of the developmental disability.
B. Initiate psychotropic medication after documenting the behavior.
C. Evaluate for potential underlying medical conditions before attributing the
behavior to psychological causes.
D. Recommend behavioral restrictions until the cause is identified.
🔴 Correct Answer: C. Evaluate for potential underlying medical conditions before
attributing the behavior to psychological causes.
,🔵 Explanation: Behavioral changes in individuals with communication limitations
frequently represent underlying medical problems such as pain, infection, constipation,
or medication effects. Comprehensive assessment should precede psychiatric or
behavioral interventions whenever possible.
QUESTION 3.
A nurse discovers that an individual repeatedly refuses prescribed antihypertensive
medication despite demonstrating decision-making capacity. Which response best
reflects ethical nursing practice?
A. Respect the refusal after ensuring informed understanding of the risks and
documenting the discussion.
B. Administer the medication covertly to prevent serious complications.
C. Obtain consent from another resident living in the home.
D. Require medication administration before allowing participation in preferred
activities.
🔴 Correct Answer: A. Respect the refusal after ensuring informed understanding
of the risks and documenting the discussion.
🔵 Explanation: Competent adults have the right to refuse treatment after receiving
appropriate education regarding benefits and risks. Coercive or deceptive medication
administration violates ethical principles and individual rights.
QUESTION 4.
An interdisciplinary team is reviewing repeated aspiration pneumonia in an individual
with dysphagia. Which nursing intervention provides the greatest contribution
toward long-term risk reduction?
A. Increasing fluid intake without reassessment.
B. Limiting meals to one large feeding daily.
C. Eliminating oral intake indefinitely without specialist evaluation.
, D. Coordinating reassessment with speech-language pathology while monitoring
adherence to individualized swallowing recommendations.
🔴 Correct Answer: D. Coordinating reassessment with speech-language
pathology while monitoring adherence to individualized swallowing
recommendations.
🔵 Explanation: Dysphagia management requires interdisciplinary collaboration and
ongoing reassessment because swallowing ability may change over time. Evidence-
based swallowing strategies reduce aspiration risk while promoting nutrition and
quality of life.
QUESTION 5.
A nurse identifies that multiple staff members document the same intervention
differently, making outcome evaluation difficult. Which quality improvement strategy
is most appropriate?
A. Implement standardized documentation practices with education and periodic
audits.
B. Permit each clinician to use personal documentation preferences.
C. Remove documentation requirements for repetitive interventions.
D. Delay documentation until monthly care conferences.
🔴 Correct Answer: A. Implement standardized documentation practices with
education and periodic audits.
🔵 Explanation: Consistent documentation supports continuity of care, legal
compliance, communication, and quality measurement. Education combined with
auditing helps improve reliability and accuracy across providers.
QUESTION 6.
A nurse is evaluating medication-related risks in an older adult with Down syndrome
who demonstrates new cognitive decline. Which consideration is most important?
TESTBANK | PRACTICE QUESTIONS & ANSWERS | CERTIFICATION EXAM
PREPARATION | LATEST UPDATE 2026/2027 | ADVANCED REVIEW |
COMPREHENSIVE PRACTICE EXAM
Examiner:
Developmental Disabilities Nurses Association (DDNA)
TABLE OF CONTENTS
1. Foundations of Developmental Disabilities Nursing
2. Person-Centered Care Planning
3. Health Assessment and Clinical Decision-Making
4. Health Promotion and Disease Prevention
5. Medication Management
6. Behavioral and Mental Health Support
7. Ethical and Legal Responsibilities
8. Interdisciplinary Collaboration
9. Aging and Chronic Conditions in Developmental Disabilities
10. Emergency Care and Risk Management
11. Communication Strategies
12. Family Education and Advocacy
13. Documentation and Quality Improvement
14. Community-Based Nursing Practice
15. Professional Standards and Leadership
DEVELOPMENTAL DISABILITIES || PERSON-CENTERED CARE || HEALTH
ASSESSMENT || CARE COORDINATION || CLINICAL JUDGMENT || ETHICS ||
ADVOCACY || MEDICATION SAFETY || BEHAVIORAL SUPPORT ||
INTERDISCIPLINARY TEAM || QUALITY IMPROVEMENT || COMMUNITY NURSING ||
RISK MANAGEMENT || DOCUMENTATION || HEALTH PROMOTION ||
PROFESSIONAL PRACTICE
,QUESTION 1.
A nurse is developing a comprehensive care plan for an adult with an intellectual
disability who has recently transitioned from an institutional setting to community-
based living. Which action best demonstrates person-centered nursing practice?
A. Prioritizing interventions identified by the interdisciplinary team over the
individual's stated preferences.
B. Developing goals collaboratively with the individual while incorporating their
values, preferences, strengths, and informed choices.
C. Using standardized interventions for all individuals with similar diagnoses.
D. Focusing primarily on reducing healthcare costs through streamlined services.
🔴 Correct Answer: B. Developing goals collaboratively with the individual while
incorporating their values, preferences, strengths, and informed choices.
🔵 Explanation: Person-centered care emphasizes respecting the individual's
autonomy, preferences, strengths, and life goals while developing an individualized
plan of care. Standardized approaches or decisions driven solely by professionals or cost
considerations fail to recognize the unique needs and rights of the individual.
QUESTION 2.
During an annual health assessment, a nurse recognizes a subtle change in baseline
behavior in a nonverbal individual with developmental disabilities. What is the
nurse's most appropriate initial action?
A. Assume the behavior reflects progression of the developmental disability.
B. Initiate psychotropic medication after documenting the behavior.
C. Evaluate for potential underlying medical conditions before attributing the
behavior to psychological causes.
D. Recommend behavioral restrictions until the cause is identified.
🔴 Correct Answer: C. Evaluate for potential underlying medical conditions before
attributing the behavior to psychological causes.
,🔵 Explanation: Behavioral changes in individuals with communication limitations
frequently represent underlying medical problems such as pain, infection, constipation,
or medication effects. Comprehensive assessment should precede psychiatric or
behavioral interventions whenever possible.
QUESTION 3.
A nurse discovers that an individual repeatedly refuses prescribed antihypertensive
medication despite demonstrating decision-making capacity. Which response best
reflects ethical nursing practice?
A. Respect the refusal after ensuring informed understanding of the risks and
documenting the discussion.
B. Administer the medication covertly to prevent serious complications.
C. Obtain consent from another resident living in the home.
D. Require medication administration before allowing participation in preferred
activities.
🔴 Correct Answer: A. Respect the refusal after ensuring informed understanding
of the risks and documenting the discussion.
🔵 Explanation: Competent adults have the right to refuse treatment after receiving
appropriate education regarding benefits and risks. Coercive or deceptive medication
administration violates ethical principles and individual rights.
QUESTION 4.
An interdisciplinary team is reviewing repeated aspiration pneumonia in an individual
with dysphagia. Which nursing intervention provides the greatest contribution
toward long-term risk reduction?
A. Increasing fluid intake without reassessment.
B. Limiting meals to one large feeding daily.
C. Eliminating oral intake indefinitely without specialist evaluation.
, D. Coordinating reassessment with speech-language pathology while monitoring
adherence to individualized swallowing recommendations.
🔴 Correct Answer: D. Coordinating reassessment with speech-language
pathology while monitoring adherence to individualized swallowing
recommendations.
🔵 Explanation: Dysphagia management requires interdisciplinary collaboration and
ongoing reassessment because swallowing ability may change over time. Evidence-
based swallowing strategies reduce aspiration risk while promoting nutrition and
quality of life.
QUESTION 5.
A nurse identifies that multiple staff members document the same intervention
differently, making outcome evaluation difficult. Which quality improvement strategy
is most appropriate?
A. Implement standardized documentation practices with education and periodic
audits.
B. Permit each clinician to use personal documentation preferences.
C. Remove documentation requirements for repetitive interventions.
D. Delay documentation until monthly care conferences.
🔴 Correct Answer: A. Implement standardized documentation practices with
education and periodic audits.
🔵 Explanation: Consistent documentation supports continuity of care, legal
compliance, communication, and quality measurement. Education combined with
auditing helps improve reliability and accuracy across providers.
QUESTION 6.
A nurse is evaluating medication-related risks in an older adult with Down syndrome
who demonstrates new cognitive decline. Which consideration is most important?
