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January 2004 Revision

The major change in this version corrects a problem that was identified concerning the assessment of Acute Stress Disorder. In the original F and J modules of the SCID, the assessment of Acute Stress Disorder was "triggered" only after the E criterion for PTSD (i.e., duration more than one month) was not met (page F.29). Once the SCID assessment resumed on page J.1, only criteria B, F, G, and H of Acute Stress Disorder were considered, since it was assumed that the C, D, and E criteria for Acute Stress Disorder (i.e., persistently reexperiencing the trauma, avoidance of stimuli that arouse recollections of the trauma, and symptoms of anxiety or increased arousal) could be skipped since the same information was presumably already evaluated as PTSD criteria B, C, and D. The problem with structuring the SCID in this manner is that, in fact, the two criteria sets are not identical in terms of their assessment of these symptoms. The PTSD criteria set includes specific symptom thresholds (i.e., one out of five symptoms for persistently reexperiencing the trauma, three out of seven symptoms of avoidance, and two out of five symptoms of increased arousal) whereas criteria D and E for Acute Stress Disorder criteria do not specify any symptom threshold (e.g., criterion D of Acute Stress Disorder reads "D. Marked avoidance of stimuli that arouse recollections of the trauma [e.g., thoughts, feelings, conversations, activities, places, people]). Thus, it is possible for an individual to not have enough symptoms to meet the minimum symptom thresholds set by criterion C and/or D for PTSD (e.g., having only one C and one D symptom) but to meet the corresponding criteria for Acute Stress Disorder. However, as originally designed, the SCID would not even allow Acute Stress Disorder to be considered for assessment in such cases since the user would have skipped out of PTSD prior to arriving to the spot on page F.29 where the user is given the option of going to page J.1 to evaluate Acute Stress Disorder.

The January 2004 version fixes this problem by 1) removing the skip instruction from page F.29 so that the assessment of Acute Stress Disorder is now independent of the assessment of PTSD; and 2) including the full criteria set for Acute Stress Disorder in module J. The addition of three additional criteria caused the page numbers in module J to be changed throughout, so that the entire J module has had to be updated. Page references to module J on pages A.5, A.17, A.22, A.32, A.37, and A.41 have been likewise updated. In module F, only page F.29 has been altered (i.e., the skip instruction to J.1 has been removed).

In another smaller change, the page references on the SCID score sheet were incorrect (in most cases reflecting the page layout of the SCID before implementation in Microsoft Word). This has been corrected.