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What is the "validity" of the SCID-II?

Skodol and colleagues (Skodol et al., 1988) compared results of a personality assessment using the SCID-II with a LEAD standard, and found that the diagnostic power of the SCID (ratio of true test results to total number of tests administered) to vary by diagnosis (from 0.45 for Narcissistic to 0.95 for Antisocial), with the diagnostic power being .85 or greater for 5 personality disorders. Several studies comparing the SCID-II to other measures of personality (e.g., MCMI and PDE) (Renneberg et.al 1992, O'Boyle and Self 1990, Oldham et al., 1992) have shown rather poor agreement between the instruments, although no conclusion could be reached about which instrument was more valid.

References

O'Boyle M, Self D: A Comparison of Two Interviews for DSM-III-R Personality Disorders, Psychiatry Research, 1990; 32:85-92

Oldham JM, Skodol AE, Kellman HD, Hyler SE, Rosnick L, Davies Diagnosis of DSM-III-R personality disorders by two structured interviews:patterns of comorbidity. Am J Psychiatry 1992 Feb;149(2):213-20

Renneberg B, Chambless DL, Dowdall DJ, Fauerbach JA, Gracely EJ: A Structured Interview for DSM-III-R, Axis II, and the Millon Clinical Multiaxial Inventory: A Concurrent Validity Study of Personality Disorders among Anxious Outpatients. Journal of Personality Disorders, 1992; 6(2):117-124.

Skodol AE, Rosnick L, Kellman D, Oldham JM, Hyler SE: Validating structured DSM-III-R personality disorder assessments with longitudinal data. Am J Psychiatry 1988; 145:1297-1299