Adverse Childhood Experiences Questionnaire

Abstract

The Adverse Childhood Experiences Questionnaire (ACE-Q) is a concise, 10-item psychometric instrument designed to systematically quantify exposure to various forms of adverse or traumatic experiences occurring before the age of 18. Developed as part of the seminal Adverse Childhood Experiences (ACE) Study, the ACE-Q assesses ten categories of adversity, which fall into two primary domains: abuse (including psychological, physical, and sexual abuse) and household dysfunction (such as witnessing domestic violence, living with household members who misuse substances, or having incarcerated relatives). The resulting score is highly predictive of future ACEs, social issues, and chronic adult mental and physical health outcomes, demonstrating a critical link between early life trauma and long-term well-being.

Keywords

Adverse Childhood Experiences, ACE-Q, childhood trauma, psychological abuse, household dysfunction, chronic disease risk, mental health, public health, screening tool.

Authors

Vincent J. Felitti, Robert F. Anda, Denise Nordenberg, David F. Williamson, Alison M. Spitz, Valerie Edwards, Mary P. Koss, James S. Marks.

[quads id=5]

Purpose

The primary purpose of the ACE-Q is to serve as a standardized screening tool to measure the cumulative burden of Adverse Childhood Experiences (ACEs) in an individual’s history. By quantifying exposure to various forms of abuse and neglect, the scale provides clinicians and researchers with a quantifiable measure (a score out of 10) that indicates the level of childhood adversity experienced.

Clinically, the ACE-Q score is instrumental in informing treatment planning, particularly in trauma-informed care settings. A high score validates a client’s history of trauma and highlights an increased risk factor for developing subsequent social, mental, and physical health problems later in life. This information allows for targeted interventions aimed at supporting mental health resilience and fostering adaptive coping behaviors necessary to mitigate these long-term risks. Furthermore, the scale serves to validate the experiences of individuals with high scores, helping them become more informed about their increased susceptibility to health issues.

Construct

The ACE-Q measures the construct of cumulative childhood adversity, often referred to as Adverse Childhood Experiences (ACEs). This construct is defined by 10 specific categories of traumatic events experienced before the age of 18, reflecting significant threats to a child’s safety, stability, and bonding relationships. These categories are grouped into three types of abuse (emotional, physical, and sexual) and five types of household dysfunction (mother treated violently, household substance abuse, household mental illness, parental separation/divorce, and incarcerated household member).

The instrument operates on the principle that exposure to such early life stressors leads to toxic stress, which can disrupt neurodevelopment and immune function, resulting in a profound and statistically significant dose-response association with adult morbidity and mortality. The construct is inherently cumulative, positing that the sheer number of distinct adverse experiences, rather than the severity of any single event, is the most powerful predictor of negative health outcomes. The measure’s focus is on exposure to maltreatment and household risks, correlating highly with later life challenges such as depression, alcoholism, drug abuse, and specific chronic diseases (e.g., heart disease and cancer).

Validity

The validity of the ACE-Q is strongly supported by the findings of the original ACE Study, which involved over 9,500 adult participants. The study established a robust correlation between the ACE-Q score and a wide array of negative health and social outcomes. This provides strong predictive validity, demonstrating that the scale accurately forecasts increased risk for chronic diseases, mental illnesses, engagement in health-risk behaviors (e.g., substance abuse), and involvement in violence (as both perpetrator and victim).

Extensive subsequent research has confirmed a graded dose-response association between elevated ACE-Q scores and increased risk for conditions such as depression, risk for PTSD, relationship instability, emotional distress, and impaired worker performance. Crucially, high ACE-Q scores predict long-term consequences, including increased odds of mood and personality disorders in adults over 65, suggesting that the mental health effects of ACEs do not simply diminish with age. For instance, individuals scoring 6 or higher face an estimated reduction in lifespan by up to 20 years compared to those scoring 0, highlighting the profound clinical significance of the measure.

Reliability

As a brief, retrospective checklist based on dichotomous (Yes/No) responses regarding historical facts, the ACE-Q generally exhibits acceptable reliability across diverse populations. The instrument’s reliability is primarily demonstrated through its consistent finding of the graded dose-response relationship across numerous replications of the ACE Study methodology in different geographical and demographic settings, confirming the stability and generalizability of the score’s predictive power.

While the original 1998 publication focused heavily on establishing predictive validity, subsequent studies have supported the test-retest reliability for measuring these stable historical events. Furthermore, the simplicity of the 10-item, additive scoring system contributes significantly to its practical reliability and ease of use in large-scale public health screenings, making it a reliable indicator of cumulative trauma exposure.

Factor Analysis

The ACE-Q is most frequently utilized as a measure of a single, unified dimension of cumulative adversity, as the total score (0–10) provides the most powerful predictive metric for adult health outcomes. However, when exploratory factor analysis is performed, the 10 items typically coalesce into two or three correlated factors. These generally correspond to the domains of Child Abuse/Neglect (e.g., psychological, physical, and sexual abuse) and Household Dysfunction (e.g., substance abuse, domestic violence, and incarceration in the household).

Despite these structural findings, the clinical utility rests firmly on the total cumulative score. This additive approach is crucial because the impact of ACEs is not necessarily tied to a single dimension but rather to the overall burden of exposure. Scores of 4 or more are considered clinically significant, representing the threshold where long-term health consequences—including a highly increased risk for depression (5 times), alcoholism (7 times), and attempted suicide (12 times)—become most pronounced in the general population.

Instrument

Test Type: Screening Instrument/Retrospective Self-Report Checklist

Format: 10 dichotomous (Yes/No) questions

Language Available: English (Widely translated into numerous languages for global public health use, including Spanish and many others)

Population Group: General Population (Originally validated on adults, but used globally for adolescents and adults)

Age Group: 18+ (Retrospective assessment of experiences occurring before age 18). Applicable for teenagers via self-report or younger children via parent-report.

Population Details: Initial validation sample consisted of over 9,500 adults (ages 19–92) enrolled in the Kaiser Permanente health maintenance organization in San Diego, California, in collaboration with the Centers for Disease Control and Prevention (CDC).

Test Methodology: The client responds “Yes” or “No” to each of the 10 items. The total score is the sum of “Yes” responses (ranging from 0 to 10). Administration can be self-report, structured interview, or collaborative clinical review, especially given the sensitive and potentially triggering nature of the trauma content.

Keywords

ACE Study, trauma screening, chronic illness prediction, substance abuse risk, dose-response, psychological abuse, retrospective assessment, public health screening.

[quads id=5]

Authors

Author ORCID Identifier: Not uniformly available or applicable for all authors from the 1998 publication.

Affiliation Email addresses: Not uniformly available or applicable for all authors from the 1998 publication.

Correspondence Address: Vincent J. Felitti, Department of Preventive Medicine, Kaiser Permanente Medical Care Program, San Diego, CA (at the time of the study).

Permissions & Fee and Test Year

The ACE-Q is a public domain instrument developed through the CDC and Kaiser Permanente. It is widely used in public health, clinical, and research settings without required fees or formal permission for standard administration. The original scale and foundational research were published in 1998, establishing the scale’s test year.

Interpretation of the score is straightforward: a higher score indicates greater exposure to childhood adversity and a higher corresponding risk for adult health and social problems. The majority of adults (52%–75%) score one or higher. Scores of 4 or more, which are found in 5%–10% of the general population, are considered clinically significant, indicating the threshold where general long-term health consequences become most pronounced.

Reference’s

• Anda, R. F., Fleisher, V. I., Felitti, V. J., Edwards, V. J.,Whitfield, C. L., Dube, S. R., & Williamson, D. F. (2004).Childhood abuse, household dysfunction, and indicators of impaired adult worker performance. The Permanente Journal, 8(1), 30–38.
• CDC.(2010). Adverse childhood experiences reported by adults—Five states, 2009. MMWR. Morbidity and Mortality Weekly Report, 59(49), 1609–1613.
• Edwards, V. J., Anda, R. F., Gu, D., Dube, S. R., & Felitti, V. J.(2007). Adverse childhood experiences and smoking persistence in adults with smoking-related symptoms and illness. The Permanente Journal, 11(2), 5–13.
• Felitti, V. J., Anda, R. F., Nordenberg, D., Williamson, D. F., Spitz, A. M., Edwards, V., Koss, M. P., & Marks, J. S. (1998). Relationship of childhood abuse and household dysfunction to many of the leading causes of death in adults. The Adverse Childhood Experiences (ACE) Study. American Journal of Preventive Medicine, 14(4), 245–258. The original article can be accessed via its DOI: https://doi.org/10.1016/s0749-3797(98)00017-8.
• Hillis, S. D., Anda, R. F., Dube, S. R., Felitti, V. J., Marchbanks, P. A., & Marks, J. S. (2004). The association between adverse childhood experiences and adolescent pregnancy, a retrospective study. Pediatrics, 114(5), e573–e580.
• Hughes, K., Bellis, M. A., Sethi, D., Jones, L., Wood, S., Harvey, M., … & Officer, A. (2017). The European public health response to adverse childhood experiences: a call to action. The Lancet Public Health, 2(10), e474-e480.
• Nurius, P. S., Logan-Greene, P., & Green, S. (2012). Adverse childhood experiences (ACEs) and their association with adult health-risk behaviors. Children and Youth Services Review, 34(12), 2478–2485.
• Patterson, M., Moniruzzaman, A., & Somers, J. M. (2014). Adverse childhood experiences and homelessness among adults with mental illness and substance use disorders. American Journal of Public Health, 104(10), 1957–1964.
• Ramiro, L. S., Dube, S. R., Anda, R. F., & Felitti, V. J. (2010). Adverse childhood experiences and poor physical and mental health in adults in a developing country: results from the Philippines. BMC Public Health, 10(1), 1–11.
• Raposo, S. M., Mackenzie, C. S., Henriksen, C. A., & Afifi, T. O. (2014). The association between adverse childhood experiences and mood and personality disorders in older adults. Journal of Affective Disorders, 153, 14–20.
• Rothman, E. F., Bernstein, J., & Strunin, L. (2010). Adverse childhood experiences and substance abuse among inner-city men. Journal of Urban Health, 87(6), 968–981.

[quads id=5]

Items of the Adverse Childhood Experiences Questionnaire

IMPORTANT: The following scale items must be preserved in their original language and must not be changed in any way.

The ACE-Q measures the following 10 categories of adverse experiences:

1. Emotional Abuse: Did a parent or other adult in the household often swear at you, insult you, put you down, or humiliate you?
2. Physical Abuse: Did a parent or other adult in the household often push, grab, slap, or throw something at you? Or ever hit you so hard that you had marks or were injured?
3. Sexual Abuse: Did an adult or person at least 5 years older than you ever touch you or make you touch them sexually, have sexual intercourse with you, or attempt to do so?
4. Emotional Neglect: Did you often feel that no one in your family loved you or thought you were important or special?
5. Physical Neglect: Did you often feel that you didn’t have enough to eat, had to wear dirty clothes, or had no one to protect you?
6. Mother Treated Violently: Did you witness your mother or stepmother being pushed, grabbed, slapped, or having something thrown at her? Or ever see her being hit or injured?
7. Household Substance Abuse: Did you live with anyone who was a problem drinker or used illegal drugs?
8. Household Mental Illness: Did a household member suffer from depression or mental illness, or attempt suicide?
9. Parental Separation/Divorce: Were your parents ever separated or divorced?
10. Incarcerated Household Member: Did a household member ever go to jail or prison?