PMID- 15466675 OWN - NLM STAT- MEDLINE DCOM- 20041102 LR - 20071114 IS - 0003-990X (Print) IS - 0003-990X (Linking) VI - 61 IP - 10 DP - 2004 Oct TI - Individual growth curve analysis illuminates stability and change in personality disorder features: the longitudinal study of personality disorders. PG - 1015-24 AB - BACKGROUND: The long-term stability of personality pathology remains an open question. Its resolution will come from prospective, multiwave longitudinal studies using blinded assessments of personality disorders (PD). Informative analysis of multiwave data requires the application of statistical procedures, such as individual growth curve modeling, that can detect and describe individual change appropriately over time. The Longitudinal Study of Personality Disorders, which meets contemporary methodological design criteria, provides the data for this investigation of PD stability and change from an individual growth curve perspective. METHODS: Two hundred fifty subjects were examined for PD features at 3 different time points using the International Personality Disorders Examination during a 4-year study. Stability and change in PD features over time were examined using individual growth modeling. RESULTS: Fitting of unconditional growth models indicated that statistically significant variation in PD features existed across time in the elevation and rate of change of the individual PD growth trajectories. Fitting of additional conditional growth models, in which the individual elevation and rate-of-change growth parameters were predicted by subjects' study group membership (no PD vs possible PD), sex, and age at entry into the study, showed that study group membership predicted the elevation and rate of change of the individual growth curves. Comorbid Axis I psychopathology and treatment during the study period were related to elevations of the individual growth trajectories, but not to rates of change. CONCLUSIONS: From the perspective of individual growth curve analysis, PD features show considerable variability across individuals over time. This fine-grained analysis of individual growth trajectories provides compelling evidence of change in PD features over time and does not support the assumption that PD features are traitlike, enduring, and stable over time. FAU - Lenzenweger, Mark F AU - Lenzenweger MF AD - Department of Psychology, State University of New York at Binghamton, Binghamton 13902-6000, USA. mlenzen@binghamton.edu FAU - Johnson, Matthew D AU - Johnson MD FAU - Willett, John B AU - Willett JB LA - eng GR - MH-45448/MH/NIMH NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Arch Gen Psychiatry JT - Archives of general psychiatry JID - 0372435 SB - IM MH - Adolescent MH - Adult MH - Bayes Theorem MH - Cluster Analysis MH - Data Interpretation, Statistical MH - Diagnostic and Statistical Manual of Mental Disorders MH - Female MH - Humans MH - Least-Squares Analysis MH - Logistic Models MH - Longitudinal Studies MH - Male MH - Models, Statistical MH - Personality Assessment/*statistics & numerical data MH - Personality Disorders/classification/*diagnosis/psychology MH - Personality Inventory/statistics & numerical data MH - Prognosis MH - Prospective Studies MH - Psychiatric Status Rating Scales/statistics & numerical data EDAT- 2004/10/07 09:00 MHDA- 2004/11/04 09:00 CRDT- 2004/10/07 09:00 PHST- 2004/10/07 09:00 [pubmed] PHST- 2004/11/04 09:00 [medline] PHST- 2004/10/07 09:00 [entrez] AID - 61/10/1015 [pii] AID - 10.1001/archpsyc.61.10.1015 [doi] PST - ppublish SO - Arch Gen Psychiatry. 2004 Oct;61(10):1015-24. doi: 10.1001/archpsyc.61.10.1015.