Academically reviewed by Dr. Sabina Alispahić, Ph.D., professor of psychology.
Complex PTSD (CPTSD-ITQ) Test
The International Trauma Questionnaire (ITQ) is a validated, evidence-based self-report tool designed to assess ICD-11 diagnoses of Post-Traumatic Stress Disorder (PTSD) and Complex PTSD (C-PTSD). Developed by trauma experts, including Marylène Cloitre and colleagues, the ITQ is widely used in clinical and research settings worldwide. It evaluates core PTSD symptoms and the three additional CPTSD domains: affective dysregulation, negative self-concept, and relational disturbances.
Question 1 of 18
I feel mistrustful of other people.
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The International Trauma Questionnaire (ITQ) is a psychological assessment tool designed to measure symptoms associated with Post-Traumatic Stress Disorder (PTSD) and Complex PTSD (C-PTSD) in accordance with the criteria outlined in the 11th edition of the International Classification of Diseases (ICD-11). It is commonly used in both clinical and research settings to identify the presence and severity of trauma-related symptoms in individuals who have experienced one or more traumatic events.
The ITQ is structured to capture two primary diagnostic categories. The first is PTSD, which includes three core symptom clusters: re-experiencing the trauma in the present (e.g., flashbacks or nightmares), avoidance of trauma-related thoughts or reminders, and a persistent sense of threat manifested through hypervigilance or exaggerated startle responses. The second category is C-PTSD, which includes the symptoms of PTSD along with three additional clusters related to disturbances in self-organization (DSO). These are affective dysregulation (problems with emotional regulation, such as intense anger or emotional numbness), negative self-concept (feelings of worthlessness, shame, or guilt), and interpersonal disturbances (difficulty maintaining relationships or feeling disconnected from others).
The ITQ typically contains 18 symptom items, each rated by the individual based on how frequently or severely they experience the symptom. Responses are usually recorded on a Likert scale, allowing clinicians and researchers to assess both the presence and intensity of each symptom. Additionally, the questionnaire includes items that assess functional impairment in key areas of life, such as relationships, work, or general well-being, which helps determine whether the symptoms significantly interfere with the individual's daily functioning.
The development of the ITQ was grounded in extensive research, including psychometric analyses and clinical validation studies. It was developed by a team of international experts in trauma and psychopathology, including Dr. Marylène Cloitre, and has since been translated into numerous languages. Its brevity and clear structure make it a practical tool for use in diverse populations and settings, from mental health clinics to humanitarian aid contexts.
One of the strengths of the ITQ is its alignment with ICD-11, which distinguishes it from many other trauma assessments based on the DSM-5 criteria. The ICD-11's recognition of C-PTSD as a separate and distinct diagnosis from PTSD marks a significant advancement in trauma-related diagnostics, and the ITQ is the first and primary instrument developed to reflect this distinction accurately. This specificity is especially important for identifying individuals who may require more intensive or specialized treatment approaches due to the chronic and pervasive nature of C-PTSD symptoms.
In practice, the ITQ provides clinicians with a reliable way to tailor treatment plans to the individual's unique symptom profile. It also facilitates outcome tracking over time, allowing for the evaluation of therapeutic effectiveness. As understanding of trauma and its impacts continues to evolve, tools like the ITQ play a vital role in advancing both clinical care and trauma research.
Frequently Asked Questions
What does the CPTSD-ITQ test measure?
It measures symptoms of PTSD and Complex PTSD according to ICD-11 criteria, covering re-experiencing, avoidance, sense of threat, affective dysregulation, negative self-concept, and relational disturbances.
How many symptom items does the ITQ contain?
The ITQ contains 18 symptom items rated on a Likert scale, plus additional questions about functional impairment.
What are the three additional symptom clusters that distinguish C-PTSD from PTSD?
Affective dysregulation, negative self-concept, and interpersonal disturbances make up the disturbances in self-organization domain of C-PTSD.
Does a high score on this test confirm a diagnosis?
No, a score is not a diagnosis; only a qualified clinician can determine whether symptoms meet ICD-11 criteria for PTSD or C-PTSD.
What does functional impairment mean in the context of the ITQ?
Functional impairment refers to the degree to which symptoms interfere with relationships, work, or overall well-being, helping determine the real-world impact of trauma-related difficulties.
Why Use This Test?
The International Trauma Questionnaire (ITQ) is a brief, reliable tool designed to assess ICD-11 PTSD and Complex PTSD (C-PTSD). It captures both core trauma symptoms and deeper disturbances in self-organization, offering a comprehensive view of post-traumatic impact. Clinicians and researchers use the ITQ to accurately diagnose, guide treatment planning, and monitor recovery. Its clear structure, strong psychometric backing, and cross-cultural validity make it ideal for use in clinical settings, research studies, and trauma-informed care practices.