Free ACE Score Test (Felitti 1998)

The ACE (Adverse Childhood Experiences) score is a count of 10 specific categories of childhood adversity, developed in the landmark 1998 ACE Study by Vincent Felitti and Robert Anda at Kaiser Permanente. Each yes/no item adds 1 to the score; possible scores range from 0 to 10. The ACE Study showed dose-response relationships between ACE score and a wide range of adult health outcomes — including mental health conditions, heart disease, autoimmune conditions, substance use, and early mortality. About 2/3 of US adults have an ACE score of 1+; about 12% have a score of 4+ (the threshold widely used in research for substantially elevated risk).

Your ACE score is a population-level risk marker, not an individual prediction. Higher ACE scores are associated with substantially elevated risk for adult depression (4-5x at ACE 4+), substance use disorders (4-7x), suicide attempts (12x at ACE 4+, 30x+ at ACE 7+), heart disease (2-3x), autoimmune conditions (2x), and multiple cancer types. But the multipliers are population averages — individual outcomes vary significantly based on adult corrective experience, social support, therapy, and other resilience factors. Many adults with high ACE scores have substantially modified their adult trajectory; many with low ACE scores still face significant health challenges from other factors.

The original 10 ACE categories are organised into 3 groups. Abuse (3 categories): emotional abuse, physical abuse, sexual abuse. Neglect (2 categories): emotional neglect, physical neglect. Household dysfunction (5 categories): parental separation/divorce, witnessing domestic violence, household substance use, household mental illness or suicide attempt, household member incarcerated. Each category is binary (yes/no) — intensity and frequency aren't captured in the original ACE score. The Childhood Trauma Questionnaire (CTQ) provides more nuanced measurement of intensity if needed.

Yes — and this is one of the most important findings beyond the original ACE study. The original research demonstrated correlation between ACE and adult outcomes; subsequent research has shown that adult corrective experience can substantially modify the trajectory. Sustained trauma-focused therapy (EMDR, IFS, sensorimotor psychotherapy, schema therapy), supportive adult relationships, somatic regulation practices, and access to social/economic resources all measurably reduce the impact of high ACE scores. Many adults with ACE 6+ lead lives that look fundamentally different from what the population statistics would predict.

Both measure childhood adversity but differently. ACE: 10-item binary (yes/no) count covering abuse + neglect + household dysfunction; simpler, broader, better for population epidemiology. CTQ (Childhood Trauma Questionnaire): 28-item Likert scale measuring intensity and frequency across 5 abuse/neglect dimensions; more nuanced, better for clinical work. Both are useful and complementary. We have separate Mindshape pages for each — take whichever fits your need, or both for a fuller picture.

The ACE Study was one of the most consequential public-health findings of the late 20th century. It demonstrated that childhood adversity has measurable, dose-response effects on adult health — not just mental health, but physical health outcomes including cardiovascular disease, autoimmune conditions, and cancer. This reframed childhood adversity from a 'social problem' to a public-health crisis. ACE-informed practice is now standard in trauma-informed healthcare, education, and child welfare. Knowing your own ACE score can prompt protective lifestyle choices, inform decisions about therapy, and put current patterns into a useful context.

The ACE test takes most people 2-3 minutes — it is 10 yes/no questions about childhood. Results show your ACE score (0-10) plus the relevant adult risk multipliers research has documented.