Sam Vaknin

Structured Interviews

The Structured Clinical Interview (SCID-II) was formulated in 1997 by First, Gibbon, Spitzer, Williams, and Benjamin.

The Structured Clinical Interview (SCID-II) was formulated in 1997 by First, Gibbon, Spitzer, Williams, and Benjamin. It closely follows the language of the DSM-IV Axis II Personality Disorders criteria. Consequently, there are 12 groups of questions corresponding to the 12 personality disorders. The scoring is equally simple: either the trait is absent, subthreshold, true, or there is "inadequate information to code".

The feature that is unique to the SCID-II is that it can be administered to third parties (a spouse, an informant, a colleague) and still yield a strong diagnostic indication. The test incorporates probes (sort of "control" items) that help verify the presence of certain characteristics and behaviors. Another version of the SCID-II (comprising 119 questions) can also be self-administered. Most practitioners administer both the self-questionnaire and the standard test and use the former to screen for true answers in the latter.

The Structured Interview for Disorders of Personality (SIDP-IV) was composed by Pfohl, Blum and Zimmerman in 1997. Unlike the SCID-II, it also covers the self-defeating personality disorder from the DSM-III. The interview is conversational and the questions are divided into 10 topics such as Emotions or Interests and Activities. Succumbing to "industry" pressure, the authors also came up with a version of the SIDP-IV in which the questions are grouped by personality disorder. Subjects are encouraged to observe the "five year rule":

"What you are like when you are your usual self ... Behaviors. cognitions, and feelings that have predominated for most of the last five years are considered to be representative of your long-term personality functioning ..."

The scoring is again simple. Items are either present, subthreshold, present, or strongly present.

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