Inventory of Interpersonal Problems (IIP) - Personality Disorders

This submission contains data and codebooks from several personality studies conducted 1990-2017, organized by assessment instrument. For demographic information about the study participants, please refer to Background Information Questionnaire (BIQ) - Personality Studies (http://d-scholarship.pitt.edu/id/eprint/35424). Studies: 1. Validity in the Diagnosis of Personality Disorders ("Validity") 2. Screening for Personality Disorders ("Screening") 3. Interpersonal Functioning in Borderline Personality ("Interpersonal Functioning") 4. Interpersonal Functioning and Emotion in Borderline Personality ("Emotion and Interpersonal Functioning") 5. Interpersonal Functioning and Emotion in Borderline Personality ("Couples") (From Morse et al 2007): The original Inventory of Interpersonal Problems (IIP; Horowitz, Rosenberg, Ureño, & Villaseño, 1988) contains 127 items derived from content analysis of intake interviews with psychiatric outpatients. Items are rated from 0 not at all to 4 extremely distressing. Conventional scoring includes six subscales (problems with intimacy, assertiveness, sociability, submissiveness, interpersonal control, and excessive responsibility for others). The five personality disorder scales (Pilkonis et al., 1996) are scored from 47 of the original 127 items. These scales are interpersonal sensitivity, interpersonal ambivalence, aggression, need for social approval, and lack of sociability. Previous analyses indicated that the mean of the first three scales distinguished best between patients with any versus no PD. The final two scales were developed to distinguish cluster C PDs from other PD’s. A three-item screener version (IIP-3) has also been derived (Pilkonis, et al, in press). The IIP-88 contains items from the Circumplex IIP (n=64) and the IIP -PD-47 (n=24). From the IIP-88, the Circumplex IIP and the IIP-PD can be scored. The IIP-90 contains items from the Circumplex IIP (n=64), the IIP-PD-47 (n=24), and the IIP-BPD (n=2). All three can be scored from the IIP-90. Data Notes: (Validity Study) Participants were asked to identify a person who knew them well and who would be willing to participate as a collaborative reporter. These participants are classified as ‘significant others’ and can be identified using the RATERCODE and RATERID variables. Reliability: (From Miller et al 2012): Internal consistencies ranged from .88 to .92. (From Stepp, Hallquist, Morse, & Pilkonis, 2011): The internal consistency of the IIP items in this study was .96. (From Morse and Pilkonis, 2007): The test-retest reliability of the three individual IIP-PD scales ranged from .67 to .88 in psychiatric subjects, with the mean of these measures (the screening index itself) having a test-retest reliability of .85 (M = 1.28 at screening, SD = .73, and 1.18 at interview, SD = .72). Citations: Alden, L.E., Wiggins, J.S., and Pincus. A.L (1990). Construction of Circumplex Scales for the Inventory of Interpersonal Problems. Journal of Personality Assessment, 55(3-4). Horowitz L.M., Rosenberg S.E., Baer B.A., Ureno G., & Villasenor V.S. (1988). Inventory of Interpersonal Problems: Psychometric properties and clinical applications. Journal of Consulting and Clinical Psychology, 56, 885-892 Kim, Y. & Pilkonis, P.A. (1999). Selecting the most informative items in the IIP scales for personality disorders: An application of item response theory. Journal of Personality Disorders, 13(2), 157-174. Miller, J.D., Morse, J.Q., Nolf, K., Stepp, S.D., & Pilkonis, P.A. (2012). Can DSM–IV borderline personality disorder be diagnosed via dimensional personality traits? Implications for the DSM-5 personality disorder proposal. Journal of Abnormal Psychology, 121(4), 944-950. Morse, J.Q., Pilkonis, P.A. (2007). Screening for personality disorders. Journal of Personality Assessment, 21(2), 179-198. Pilkonis, P.A., Lawrence, S.M., Johnston, K.L., & Dodds, N.E. (in press). Screening for personality disorders: A three-item screener from the Inventory of Interpersonal Problems (IIP-3). Journal of Personality Disorders. Pilkonis, P. A., Y. Kim, et al. (1996). "Scales for Personality Disorders Developed from the Inventory of Interpersonal Problems." Journal of Personality Disorders 10(4): 355-369. Stepp, S. D., Hallquist, M. N., Morse, J. Q., & Pilkonis, P. A. (2011). Multimethod investigation of interpersonal functioning in borderline personality disorder. Personality Disorders: Theory, Research, and Treatment, 2(3), 175-192. https://doi:http://dx.doi.org/10.1037/a002057