Assessing Trauma
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Collection of Assessment Resources

ISTSS offers a number of assessment resources, including assessment measures and testing manuals.  If you would like to submit materials for inclusion, review the criteria for inclusion, then contact the web editor.

If you have a question about a specific resource, please contact its author or publisher.  The authors of these materials retain all intellectual ownership of their work. If you use any material from this site, please reference it appropriately and acknowledge copyright where relevant.

Information about the resources in this section is available to anyone; however, the copies of the materials themselves are available exclusively to ISTSS members.  Click here to learn more about membership or to become a member.

All information regarding assessment and treatment resources provided to members on the ISTSS website have been supplied by the authors of these materials. Contact the authors directly with questions or comments about these resources.

Adult Assessments for PTSD and Related Conditions

Adult Interviews

Clinician Administered PTSD Scale (CAPS)

The CAPS is widely considered to be the "gold standard" in PTSD assessment. It provides a categorical diagnosis, as well as a measure of the severity of PTSD symptoms. The CAPS is available in English, Chinese, Swedish, and Bosnian.

Acute Stress Disorder Interview (ASDI)

The ASDI is a structured interview for diagnosing Acute Stress Disorder and vulnerability to PTSD. It has 19 items based on the DSM-IV criterion.

Posttraumatic Symptom Scale--Interview Version (PSS-I)

The PSS-I is a widely utilized PTSD measure administered by an interviewer. It is a semi-structured interview providing a categorical diagnosis, as well as a measure of the severity of PTSD symptoms as defined by DSM-IV.

Adult Self-Report Measures

Posttraumatic Stress Disorder Checklist  (PCL)

The PCL is a 17-item self-report scale for PTSD. There are slightly different versions for use with military and civilian populations, as well as for adults after a "specific stressful experience". The PCL is available in English, Chinese, Spanish, and Bosnian.

Acute Stress Disorder Scale  (ASDS)

The ASDS is a 19-item self report scale for Acute Stress Disorder symptoms. It is a self-report version of the ADSI interview (above).

Trauma History Scale (THS)

The Trauma History Scale (THS) is a very brief and easy-to-complete self-report measure of exposure to high magnitude stressors and to events assoicated with significant and persisting posttraumatic distress.

Child Assessments for PTSD and Related Conditions

Child Interviews

Clinician Administered PTSD Scale for Children and Adolescents (CAPS-CA)

The CAPS-CA is a 33-item clinician-administered PTSD interview for youths aged 8 to 18 years. It is a modified version of the adult CAPS.  Items were modified to make them age appropriate and picture response options were added. Practice questions help familiarize children with the assessment. The Life Events Checklist is used to identify traumatic events. CAPS-CA is a structured interview providing a categorical diagnosis, as well as a measure of the severity of PTSD symptoms as defined by DSM-IV. It can be administered by any trained person and takes 30-60 minutes.

Child Self-Report Measures

UCLA Posttraumatic Stress Disorder Reaction Index (UCLA PTSD RI)

This instrument assesses reactions to trauma in children and adolescents. It can be used in standard self-report format or administered verbally (with questions read to the child). A parent version obtains their perception of the child's reactions.

Acute Stress Checklist for Children (ASC-Kids)

The ASC-Kids is a brief self report measure of acute traumatic stress reactions (including ASD diagnostic criteria) in children and adolescents aged 8-17. It has 29 items relating to the ASD diagnostic criteria and associated features.

Child PTSD Symptom Scale (CPSS)

The CPSS is used to measure post traumatic stress disorder severity in children aged 8-18. It is made up of 17 items in part 1 and 7 items in part 2. It takes approximately 20 minutes to administer as an interview measure (by a clinician or a therapist) and 10 minutes to complete as a self-report. Versions are available in English and Spanish.

Reactions to Research Participation Questionnaires for Children and Parents (RRPQ-C and RRPQ-P)

These instruments assess the effect of clinical research studies on child and parent participants. They are short questionnaires that may be used as a basis for the ethical conduct of research.