PTSD AND OCD: PREVALENCE, RISK
FACTORS, AND TREATMENT
STRATEGIES EXAM QUESTIONS AND
ANSWERS GRADED A+ 2025/2026
What is the estimated lifetime prevalence rate of PTSD? - ANS 7 to 12% (3.5 to 6% annual
prevalence)
Which demographic groups have higher rates of PTSD? - ANS More common among cis-
gender women, lower SES, people of color, and LGBTQ+ communities.
What percentage of people experience at least one potentially traumatic event in their lifetime?
- ANS 60% to 70%
What are common triggers for PTSD? - ANS Victimization, disasters, accidents, illnesses, and
combat.
What biological factors contribute to the risk of PTSD? - ANS Genetic predisposition, brain-
body stress pathways, and dysfunction in the amygdala, prefrontal cortex, and hippocampus.
What is the Triple Vulnerability Model? - ANS It includes neuroticism, intolerance of
uncertainty, and working memory deficits contributing to PTSD risk.
1 @COPYRIGHT 2026 ALLRIGHTS RESERVED.
FACTORS, AND TREATMENT
STRATEGIES EXAM QUESTIONS AND
ANSWERS GRADED A+ 2025/2026
What is the estimated lifetime prevalence rate of PTSD? - ANS 7 to 12% (3.5 to 6% annual
prevalence)
Which demographic groups have higher rates of PTSD? - ANS More common among cis-
gender women, lower SES, people of color, and LGBTQ+ communities.
What percentage of people experience at least one potentially traumatic event in their lifetime?
- ANS 60% to 70%
What are common triggers for PTSD? - ANS Victimization, disasters, accidents, illnesses, and
combat.
What biological factors contribute to the risk of PTSD? - ANS Genetic predisposition, brain-
body stress pathways, and dysfunction in the amygdala, prefrontal cortex, and hippocampus.
What is the Triple Vulnerability Model? - ANS It includes neuroticism, intolerance of
uncertainty, and working memory deficits contributing to PTSD risk.
1 @COPYRIGHT 2026 ALLRIGHTS RESERVED.