The Memory and Identity Theory of ICD-11 Complex PTSD

On this page you will find information about this theory and resources that can be used to test predictions arising from the theory.

our goal
A key goal of the International Trauma Consortium is to explain the development and maintenance of PTSD and Complex PTSD. To do this, we developed the Memory and Identity Theory of ICD-11 Complex PTSD

M&I Theory
Explained

The Memory and Identity Theory of ICD-11 CPTSD (M&I Theory) states that single and multiple trauma exposure occur in a context of individual vulnerability which interact to give rise to intrusive, sensation-based traumatic memories and negative identities which, together, produce the PTSD and DSO symptoms that define ICD-11 CPTSD.

The model emphasizes that the two major and related causal processes of intrusive memories and negative identities exist on a continuum from prereflective experience to full self-awareness.

M&I Theory Diagram

Measures

We have developed several measures to enable theory testing. The key theoretical variables are traumatic memories and negative identities. Another key element of the theory is pre-reflective experiences.

PTSD & CPTSD

The International Trauma Questionnaire (ITQ) is a brief, simply worded measure, focusing only on the core features of PTSD and CPTSD -  consistent with the organizing principles of the ICD-11, as set forth by the World Health Organization.

Trauma Exposure

The International Trauma Exposure Measure (ITEM) is a checklist developed to measure exposure to traumatic life events in a manner consistent with the definition of trauma exposure in the 11th version of the International Classification of Diseases.

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