Page 60 - Post-traumatic stress disorder in adults with mild intellectual disability: Screening, assessment, and brief intensive EMDR therapy

Chapter 3
consisted of 73 professional caregivers, 11 fathers, five mothers, two
sisters and one brother.
Instruments
Child and Adolescent Trauma Screen
The Kinder en Jeugd Trauma Screener (KJTS; Kooij et al., 2025) is a trauma
screener for children and adolescents (7–22 years old). There are self-
report and caregiver report versions, each consisting of three sections. The
first section was a Dutch translation of the event section of the Clinical
Administered PTSD Scale Children and Adolescents (CAPS-CA; Nader et
al., 1996) and consists of a checklist of traumatic and stressful events (19
events in the child version and 20 events in the parent version), in which
participants can indicate whether they ever had experienced the event
by marking ‘Yes’ or ‘No’. The second section is a Dutch translation of the
symptom section of the Child and Adolescent Trauma Screen (CATS-2;
Sachser et al., 2022) and consists of a list of 20 questions that correspond
to the DSM-5-TR symptom criteria for PTSD. Each item can be scored on a
4-point Likert scale (0 = never, 1 = sometimes, 2 = often, 3 = almost always).
The third section is a Dutch translation of the impact and functioning
section of the Child and Adolescent Trauma Screen (CATS-2; Sachser et
al., 2022) and contains five questions about the impact of symptoms on
daily functioning, with response options: ‘Yes’ or ‘No’. The KJTS self-report
and KJTS caregiver report both have high internal consistency. Kooij et al.
(2025) found poor agreement between the self-report of the children and
adolescents and their caregivers. Area under the curve (AUC) of the KJTS
self-report was excellent compared to PTSD diagnosis using the CAPS-CA
(Kooij et al., 2025).
Development of the adult version of the Trauma Screener-Intellectual
Disability
The adult version of the Trauma Screener-Intellectual Disability (TS-ID adult
version) was adapted from the self-report version of the KJTS. Adjustments
were made based on input from the two focus groups and the clinical
expertise of the first and third authors on trauma and PTSD in adults with
MID-BIF. One focus group consisted of three adults with MID-BIF, and the
other consisted of four psychologists with extensive experience in the care
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