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The TADS-I is a clinician administered semi-structured interview to assess dissociative symptoms and other trauma-related symptoms. The TADS-I was developed by Suzette Boon as a follow-up to the Interview for Dissociative Disorders and Trauma-Related Symptoms (IDDTS) that she previously developed with Helga Matthess. The main objective of the TADS-I is to assess the severity and quality of dissociative symptoms and other trauma-related symptoms. Taking the interview should primarily lead to a statement about the presence of a dissociative disorder.

In addition to questions about the dissociative symptoms, the TADS-I also includes questions about other trauma-related symptoms, including sleep problems, eating problems, anxiety and mood complaints, symptoms of the (complex) post-traumatic stress disorder (PTSD and CPTSS). In this way, the researcher gets a broader picture of the complaints that someone is suffering from and their treatment can be tailored accordingly.

A preliminary study of fifty interviews has now been conducted. The data from this is study are currently being analyzed. The TADS-I is also currently revised and adapted to the ICD-11 (WHO, 2019) that was issued in 2019. As soon as there is more insight into the data, the revised TADS-I will be published together with an extensive manual.

At present, the TADS-I is only given to participants of a two-day training.

If you are interested in following a training, you can contact me. Training is given regularly, currently mainly abroad, but if there is sufficient interest, a new training can also be organized (in the Netherlands and elsewhere)

The TADS-I is translated in Finnish, Norwegian, Swedish, German, French, Italian, Spanish, Polish, Estonian and Rumanian, Hungarian and Danish.