CERTIFIED DUAL DIAGNOSIS
PROFESSIONAL (CDDP) EXAM
QUESTION AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES
2026 Q&A INSTANT DOWNLOAD PDF
1. Dual diagnosis refers to the co-occurrence of:
A. Two medical illnesses
B. Two personality disorders
C. A mental health disorder and a developmental disability
D. A mental health disorder and a substance use disorder
Rationale: Dual diagnosis specifically means the presence of both a
mental health disorder and a substance use disorder at the same time.
2. Which disorder most commonly co-occurs with substance use disorders?
A. Autism spectrum disorder
B. Depression
C. Dementia
D. Intellectual disability
Rationale: Depression frequently co-occurs with substance use due to
shared neurobiological and psychosocial factors.
3. Integrated treatment for dual diagnosis means:
A. Treating substance use first
B. Treating mental illness first
C. Treating both separately by different providers
D. Treating both conditions simultaneously
, Rationale: Integrated treatment addresses both disorders at the same
time for better outcomes.
4. Which substance is most associated with anxiety disorders?
A. Opioids
B. Stimulants
C. Hallucinogens
D. Inhalants
Rationale: Stimulants can increase anxiety symptoms and panic
responses.
5. A client with schizophrenia and alcohol use disorder should receive:
A. Abstinence-only education
B. Crisis intervention only
C. Integrated psychiatric and addiction care
D. Detoxification without therapy
Rationale: Integrated care improves adherence and symptom
management.
6. Which model emphasizes stages of readiness for change?
A. Disease model
B. Psychodynamic model
C. Transtheoretical model
D. Moral model
Rationale: The Transtheoretical Model focuses on stages of change.
7. Self-medication theory suggests that substance use:
A. Is purely recreational
B. Causes mental illness
C. Is used to cope with psychiatric symptoms
D. Prevents relapse
Rationale: Individuals may use substances to relieve distressing mental
health symptoms.
, 8. Which disorder has the highest comorbidity with substance use?
A. OCD
B. PTSD
C. Bipolar disorder
D. Somatic symptom disorder
Rationale: Bipolar disorder shows high rates of substance misuse.
9. Which screening tool assesses both mental health and substance use?
A. AUDIT
B. PHQ-9
C. GAIN
D. CAGE
Rationale: GAIN screens for multiple behavioral health conditions.
10.Motivational interviewing primarily aims to:
A. Confront denial
B. Educate clients
C. Enhance intrinsic motivation
D. Diagnose disorders
Rationale: MI helps clients resolve ambivalence toward change.
11.Which symptom is common in both depression and substance withdrawal?
A. Hallucinations
B. Sleep disturbance
C. Delusions
D. Euphoria
Rationale: Sleep problems occur in both depression and withdrawal.
12.Harm reduction focuses on:
A. Complete abstinence
B. Punishment
C. Reducing negative consequences
PROFESSIONAL (CDDP) EXAM
QUESTION AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES
2026 Q&A INSTANT DOWNLOAD PDF
1. Dual diagnosis refers to the co-occurrence of:
A. Two medical illnesses
B. Two personality disorders
C. A mental health disorder and a developmental disability
D. A mental health disorder and a substance use disorder
Rationale: Dual diagnosis specifically means the presence of both a
mental health disorder and a substance use disorder at the same time.
2. Which disorder most commonly co-occurs with substance use disorders?
A. Autism spectrum disorder
B. Depression
C. Dementia
D. Intellectual disability
Rationale: Depression frequently co-occurs with substance use due to
shared neurobiological and psychosocial factors.
3. Integrated treatment for dual diagnosis means:
A. Treating substance use first
B. Treating mental illness first
C. Treating both separately by different providers
D. Treating both conditions simultaneously
, Rationale: Integrated treatment addresses both disorders at the same
time for better outcomes.
4. Which substance is most associated with anxiety disorders?
A. Opioids
B. Stimulants
C. Hallucinogens
D. Inhalants
Rationale: Stimulants can increase anxiety symptoms and panic
responses.
5. A client with schizophrenia and alcohol use disorder should receive:
A. Abstinence-only education
B. Crisis intervention only
C. Integrated psychiatric and addiction care
D. Detoxification without therapy
Rationale: Integrated care improves adherence and symptom
management.
6. Which model emphasizes stages of readiness for change?
A. Disease model
B. Psychodynamic model
C. Transtheoretical model
D. Moral model
Rationale: The Transtheoretical Model focuses on stages of change.
7. Self-medication theory suggests that substance use:
A. Is purely recreational
B. Causes mental illness
C. Is used to cope with psychiatric symptoms
D. Prevents relapse
Rationale: Individuals may use substances to relieve distressing mental
health symptoms.
, 8. Which disorder has the highest comorbidity with substance use?
A. OCD
B. PTSD
C. Bipolar disorder
D. Somatic symptom disorder
Rationale: Bipolar disorder shows high rates of substance misuse.
9. Which screening tool assesses both mental health and substance use?
A. AUDIT
B. PHQ-9
C. GAIN
D. CAGE
Rationale: GAIN screens for multiple behavioral health conditions.
10.Motivational interviewing primarily aims to:
A. Confront denial
B. Educate clients
C. Enhance intrinsic motivation
D. Diagnose disorders
Rationale: MI helps clients resolve ambivalence toward change.
11.Which symptom is common in both depression and substance withdrawal?
A. Hallucinations
B. Sleep disturbance
C. Delusions
D. Euphoria
Rationale: Sleep problems occur in both depression and withdrawal.
12.Harm reduction focuses on:
A. Complete abstinence
B. Punishment
C. Reducing negative consequences
