APA Citation
Oshri, A., Duprey, E., Liu, S., Gonzalez, A., & Caughy, M. (2022). The Relationship Between Adverse Childhood Experiences and Non-Clinical Personality Traits: A Meta-Analytic Synthesis. *Personality and Individual Differences*, 199, 111862. https://doi.org/10.1016/j.paid.2022.111862
Summary
This meta-analysis synthesizing data from over 48,000 individuals found that adverse childhood experiences are strongly related to adult personality traits, with emotional abuse and emotional neglect showing the strongest effects. Specifically, childhood adversity was most strongly associated with elevated neuroticism (anxiety, depression, emotional instability) and reduced conscientiousness (self-discipline, organization, goal-directed behavior). These aren't random correlations—they reflect how chronic stress and trauma reshape the developing brain and the personality it produces. For survivors of narcissistic abuse, this research validates that their personality struggles have identifiable causes.
Why This Matters for Survivors
If you struggle with anxiety, depression, emotional volatility (high neuroticism) or difficulty with self-discipline, organization, and follow-through (low conscientiousness), this research shows these aren't character flaws but predictable consequences of childhood adversity. Emotional abuse and neglect—hallmarks of narcissistic parenting—have the strongest effects. Understanding your personality struggles as trauma outcomes rather than inherent defects supports self-compassion and targeted intervention. You're not "just anxious" or "just disorganized"—you're carrying the neurological signature of what you experienced.
What This Research Found
Strong relationship between adversity and personality. Synthesizing data from over 48,000 individuals, the meta-analysis found significant relationships between adverse childhood experiences and adult personality traits. Childhood adversity doesn’t just cause symptoms—it shapes fundamental patterns of thinking, feeling, and behaving.
Neuroticism most strongly affected. Neuroticism—the tendency toward anxiety, depression, and emotional instability—showed the strongest relationship with childhood adversity. The effect was substantial: adverse experiences significantly elevate this trait that underlies much psychological suffering.
Conscientiousness also reduced. Adversity was associated with reduced conscientiousness—self-discipline, organization, goal-directed behavior. This helps explain why adversity survivors often struggle with follow-through, planning, and self-regulation despite knowing what they “should” do.
Emotional abuse and neglect have strongest effects. Among adversity types, emotional abuse and emotional neglect—hallmarks of narcissistic parenting—showed the strongest relationships with personality outcomes. This isn’t random; these forms of adversity most directly attack self-concept and most continuously affect the developing brain.
Why This Matters for Survivors
Your personality struggles have identifiable causes. If you experience chronic anxiety, depression, emotional volatility, or difficulty with self-discipline and organization—understand these as trauma outcomes, not character flaws. Your brain was shaped by what you experienced. This isn’t excuse-making; it’s accurate attribution.
Emotional abuse and neglect are especially damaging. Narcissistic parenting typically involves heavy emotional abuse (criticism, contempt, gaslighting) and neglect (emotional unavailability, failure to attune). This research shows these forms of adversity have the strongest personality effects—validating that your experience was genuinely harmful, even without physical abuse.
Understanding enables intervention. Believing you’re “just anxious” or “just disorganized” as fixed traits leads to resignation. Understanding these patterns as adversity outcomes opens possibilities for targeted intervention. Neuroplasticity means the brain can change; understanding what shaped it informs how to reshape it.
Self-compassion becomes possible. When you recognize your struggles as predictable consequences of documented causes, self-blame becomes less tenable. You didn’t fail to develop a good personality; your personality was shaped by circumstances you didn’t choose and couldn’t control.
Clinical Implications
Assess adversity history in personality-related presentations. Patients presenting with anxiety, depression, emotional dysregulation, or executive function difficulties may be showing adversity-related personality effects. Assessment should include childhood experience evaluation, not just symptom focus.
Reframe personality struggles for patients. Many patients believe their anxiety or disorganization is “just who they are”—fixed and unchangeable. Presenting the adversity connection can be liberating: these patterns have causes and can potentially be modified through appropriate intervention.
Address underlying neurobiological changes. Surface-level interventions (time management tips for conscientiousness problems, relaxation techniques for anxiety) may be insufficient when underlying brain changes are driving the pattern. Trauma-informed approaches addressing the neurobiological substrate may be more effective.
Support self-compassion. Patients often blame themselves for personality struggles, compounding suffering with shame. Presenting the research evidence—that adversity shapes personality through identifiable mechanisms—supports the self-compassion that aids recovery.
How This Research Is Used in the Book
This meta-analysis appears in Chapter 11: The Neurological Contagion to explain how narcissistic exposure affects personality:
“Neuroticism—the tendency towards negative emotional states including anxiety and depression—shows the strongest and most consistent relationship with childhood maltreatment and chronic stress. Meta-analytic research synthesising data from over 48,000 individuals found that adverse childhood experiences are most strongly related to elevated neuroticism, with emotional abuse and emotional neglect showing the strongest effects.”
The chapter also discusses conscientiousness:
“Childhood maltreatment consistently associates with reduced conscientiousness: Working memory impairment from chronic stress reduces the capacity to hold goals in mind while executing complex plans. Cognitive depletion from hypervigilance leaves insufficient resources for the self-regulation that conscientiousness requires. Executive function hijacking redirects the neural systems underlying conscientiousness from self-directed goals to threat management.”
Historical Context
This 2022 meta-analysis represents the maturation of research connecting childhood adversity to personality. Earlier work had focused on specific symptoms (depression, PTSD) or narrow personality constructs. By examining the full Big Five model, this research showed that adversity affects fundamental personality structure, not just discrete symptoms.
The finding that emotional abuse and neglect have the strongest effects is particularly important for understanding narcissistic parenting. Unlike physical abuse, emotional abuse can be continuous and invisible—it’s what happens every day, not during discrete violent episodes. The meta-analysis validates that this continuous harm produces the strongest personality effects.
Further Reading
- Costa, P.T., & McCrae, R.R. (1992). Revised NEO Personality Inventory (NEO-PI-R) and NEO Five-Factor Inventory (NEO-FFI) Professional Manual. Psychological Assessment Resources.
- McEwen, B.S. (2007). Physiology and neurobiology of stress and adaptation: Central role of the brain. Physiological Reviews, 87(3), 873-904.
- Teicher, M.H., & Samson, J.A. (2016). Annual research review: Enduring neurobiological effects of childhood abuse and neglect. Journal of Child Psychology and Psychiatry, 57(3), 241-266.
- van der Kolk, B. (2014). The Body Keeps the Score: Brain, Mind, and Body in the Healing of Trauma. Viking.
- Miller, J.D., et al. (2018). Five-factor model facet characteristics of non-suicidal self-injury. Journal of Abnormal Psychology, 127(4), 346-355.
About the Author
Assaf Oshri, PhD is Associate Professor in the Department of Human Development and Family Science at the University of Georgia. His research focuses on the developmental and neurobiological effects of early adversity, particularly how childhood experiences shape adult functioning.
This meta-analysis represents a major synthesis of research on adversity and personality, combining data from dozens of studies to produce robust estimates of effects. Meta-analyses carry more weight than individual studies because they aggregate evidence across different samples, methods, and contexts.
Historical Context
Published in 2022, this meta-analysis appeared as the field increasingly recognized that adverse childhood experiences affect not just discrete symptoms but personality itself—the stable patterns of thinking, feeling, and behaving that define who we are. While earlier research had examined specific outcomes (PTSD, depression), this work addressed broader personality structure, showing that childhood adversity shapes fundamental aspects of adult functioning.
Frequently Asked Questions
The Big Five (Five Factor Model) measures personality across five dimensions: Neuroticism (tendency toward negative emotions), Extraversion (sociability, positive emotion), Openness (curiosity, creativity), Agreeableness (cooperation, trust), and Conscientiousness (self-discipline, organization). These dimensions are well-validated and relatively stable across the lifespan—making it significant that childhood adversity can shift them.
Neuroticism—the tendency toward anxiety, depression, and emotional instability—reflects brain regions and systems most vulnerable to chronic stress. The amygdala (threat detection) becomes sensitized; the HPA axis (stress response) becomes dysregulated; cortisol patterns become abnormal. These neurological changes translate directly into the chronic anxiety and emotional volatility that define high neuroticism.
Conscientiousness depends heavily on prefrontal cortex function—the brain region responsible for executive function, self-regulation, and goal-directed behavior. Chronic stress impairs prefrontal function. Additionally, children in chaotic, threatening environments must focus resources on survival rather than long-term planning. The reduced conscientiousness observed in adversity survivors reflects both brain changes and adaptive prioritization.
Emotional abuse and neglect—unlike physical abuse—can be continuous, pervasive, and harder to escape or even recognize. They directly attack self-concept and worth. Physical abuse, while traumatic, often has periods of safety between incidents. Emotional abuse can be constant, shaping development throughout childhood. Narcissistic parenting typically involves heavy emotional abuse and neglect.
Not necessarily. While stable, personality can change across the lifespan and in response to intervention. Therapy, medication, life circumstances, and intentional practice can shift personality traits. The changes from childhood adversity are real but not destiny. However, change typically requires understanding what happened and targeted intervention—simply willing yourself to be less anxious or more organized isn't sufficient.
No—it means adversity has measurable effects that should be acknowledged rather than denied. Understanding these effects supports targeted intervention rather than self-blame. Research on earned security, post-traumatic growth, and neuroplasticity shows that adversity outcomes can be modified. The damage is real; so is the capacity for change.
PTSD and C-PTSD are diagnostic categories describing specific symptom clusters. Personality traits are broader patterns underlying many symptoms. The neuroticism elevation documented here contributes to PTSD symptoms (anxiety, hypervigilance) but also affects general functioning beyond formal diagnosis. Many adversity survivors don't meet PTSD criteria but still show personality effects.
Treatment should recognize that personality struggles may reflect adversity outcomes, not inherent traits. This reframe supports self-compassion. Treatment approaches addressing anxiety and disorganization should account for their origins in developmental trauma. Interventions addressing underlying neurobiological changes (not just symptoms) may be more effective than surface-level behavioral modification.