Structured Clinical Interview for the DSM-IV Axis I Disorders (SCID PTSD Module) - PTSD: National Center for PTSD
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Structured Clinical Interview for the DSM-IV Axis I Disorders (SCID PTSD Module)

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Structured Clinical Interview for the DSM-IV Axis I Disorders (SCID PTSD Module)

First, Spitzer, Gibbon, & Williams, 1996


The Structured Clinical Interview for DSM-IV Axis I Disorders (SCID-I) is a semistuctured interview for making the major DSM-IV Axis I diagnoses. The instrument is designed to be administered by a clinician or trained mental health professional. Ideally, this will be someone who has had experience performing unstructured diagnostic evaluations. However, for the purposes of some research studies, non-clinician research assistants who have extensive experience with the study population in question have been trained to use the SCID. The less clinical experience the potential interviewer has had, the more training is required.

The SCID is broken down into separate modules corresponding to categories of diagnoses. Most sections begin with an entry question that would allow the interviewer to "skip" the associated questions if not met. For all diagnoses symptoms are coded as present, subthreshold, or absent. A diagnosis of PTSD is made following the PTSD diagnostic algorithm.

Sample Item

Entry question

How did you react when (trauma) happened? (were you very afraid or did you feel terrified or helpless?)

1 - absent or false
2 - subthreshold
3 - threshold or true

Question B1

Now I'd like to ask you a few questions about specific ways that it may have affected you. For example: did you think about (trauma) when you didn't want to or did thoughts about (trauma) come to you suddenly when you didn't want them to?

1 - absent or false
2 - subthreshold
3 - threshold or true


The SCID-1 is a semistuctured interview for making the major DSM-IV Axis I diagnoses (e.g., PTSD). The SCID-II is a semi-structured interview for making DSM-IV Axis II (Personality Disorder) diagnoses. The Clinician Version is a streamlined version of the SCID-I (for Axis I Disorders) available from American Psychiatric Press, Inc. One significant difference is in formatting: the SCID-CV is published in two parts--a reusable Administration Booklet (with color-coded tabs) and one-time-use-only score sheets. The Research Version is available only as a single-sided master.

The SCID-I/P (Patient Edition) is the standard SCID and is designed for use with subjects who are identified as psychiatric patients. For settings in which psychotic disorders are expected to be rare (e.g., an outpatient anxiety clinic) or for studies in which patients with psychotic disorders are being screened out, an abridged edition of the SCID-I/P (SCID-I/P W/ PSYCHOTIC SCREEN) is available. This edition replaces the standard Psychotic Modules (i.e., Modules B and C) with a combined B/C module that includes only screening questions about psychotic symptoms. In addition, the SCID-I/P (W/PSYCHOTIC SCREEN) has an abridged summary score sheet that does not include psychotic disorders. The SCID-I/NP (Non-patient Edition) is for use in studies in which the subjects are not identified as psychiatric patients (e.g., community surveys, family studies, research in primary care). The diagnostic modules of the SCID-I/NP are the same as those of the SCID-I/P (W/PSYCHOTIC SCREEN); the only difference in the two versions is in the Overview section. In the SCID-I/NP there is no assumption of a chief complaint, and other questions are used to inquire about a history of psychopathology.


First, MB, Spitzer, RL, Gibbon, M. & Williams, JB (1996). Structured Clinical Interview for the DSM-IV Axis I Disorders.

Spitzer RL, Williams JB, Gibbon M, & First MB. (1992). The Structured Clinical Interview for DSM-III-R (SCID). I: History, rationale, and description. Arch Gen Psychiatry, 49(8):624-9.

Ventura J, Liberman RP, Green MF, et al. (1998). Training and quality assurance with the structured clinical interview for DSM-IV (SCID-I/P). Psychiat Res, 79, 163-173.

Werner, PD (2001). Structured Clinical Interview for DSM-IV Axis 1 Disorders: Clinician Version. In B.S. Plake & J.C. Impara (Eds.), The fourteenth mental measurements yearbook (pp. 1123-1125). Lincoln: NE: Buros institute of Mental Measurements.

To Obtain Scale

The Clinician Version of the SCID-I (SCID-CV), and the SCID-II, may be purchased from American Psychiatric Press (1-800-368-5777).

The Research Version of the SCID-I may be ordered through will take you outside the VA website. VA is not responsible for the content of the linked site.

Please note: Information on the SCID was obtained primarily from the SCID website.

Measure availability: We provide information on a variety of measures assessing trauma and PTSD. These measures are intended for use by qualified mental health professionals and researchers. Measures authored by National Center staff are available as direct downloads or by request. Measures developed outside of the National Center can be requested via contact information available on the information page for the specific measure.

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PTSD Information Voice Mail: (802) 296-6300
Also see: VA Mental Health