title: The Italian version of the Inventory of Interpersonal Problems Personality Disorders Scales (IIP-47): psychometric properties and clinical usefulness as a screening measure.
abstract: The Inventory of Interpersonal Problems-47 (IIP-47) is a brief and valid self-report measure for screening Personality Disorders (PDs). This study examined internal consistency, factor structure, criterion validity, temporal stability, and operating characteristics of the Italian version of the IIP-47 in two independent samples: PD subjects (n = 120) and nonclinical subjects (n = 475). Alpha coefficients ranged from .70 to .90. Multiple-Group Confirmatory Factor Analyses showed that the five-correlated-factor model reported in literature had the highest measurement invariance across the two groups. Criterion validity was supported by correlations among IIP-47 scale scores and scores on established measures of personality dimensions and pathology. Test-retest indices ranged from .71 to .95. PD subjects scored significantly higher than nonclinical subjects on all IIP-47 scales and cut-off scores for different levels of specificity and sensibility are reported. It is concluded that the psychometric properties of the original IIP-47 were preserved in its Italian version.
authors.affiliation: Psyche-dendron Association, Milan, Italy. ubbiali.alessandro@psyche-dendron.eu
authors.forename: Alessandro
authors.initials: A
authors.lastname: Ubbiali
authors.forename: Carlo
authors.initials: C
authors.lastname: Chiorri
authors.forename: Deborah
authors.initials: D
authors.lastname: Donati
mesh_terms: D006801:Humans; D007389:Internal-External Control; D007398:Interpersonal Relations; D007558:Italy; D010551:Personality; D010554:Personality Disorders / Q000145:classification* / Q000175:diagnosis*; D010555:Personality Inventory / Q000592:standards*; D011594:Psychometrics; D015203:Reproducibility of Results; D014177:Translations