Trends in Psychiatry and Psychotherapy
https://trends.org.br/article/doi/10.1590/S2237-60892012000200009
Trends in Psychiatry and Psychotherapy
Original Article

Application of the Rasch model in measuring personality disorders

Aplicação do modelo de Rasch na medida de transtornos da personalidade

Lucas de Francisco Carvalho; Ricardo Primi; Gregory J. Meyer

http://dx.doi.org/10.1590/S2237-60892012000200009 Trends Psychiatry Psychother, vol.34, n2, p.101-109, 2012
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Abstract

OBJECTIVE: To describe item and person parameters obtained with the Rasch model, one of the item response theory models, in the assessment of personality disorders based on Millon's theory. METHOD: A total of 350 people participated in the study. Age ranged from 18 to 67 years (mean ± standard deviation = 27.02±10.13), and 71.7% of the participants (n = 251) were female. Of the 350 individuals, 21.1% (n = 74) answered affirmatively about being under psychiatric treatment and taking psychiatric medications. The Personality Disorders Dimensional Inventory (PDDI), an instrument designed to assess personality disorders according to Millon's theory, was applied to all participants. Data were analyzed using the Rasch model. RESULTS: Overall, analysis with the Rasch model revealed that the PDDI has adequate psychometric properties for the assessment of personality disorders. CONCLUSION: Among the contributions of item response theory models for clinical instruments, the Rasch person-item map deserves to be highlighted as a successful attempt to improve the understanding of clinical scores obtained in response to particular test items.

Keywords

Health evaluation, diagnosis, validation studies, psychiatric status rating scales

Resumo

OBJETIVO: Descrever os parâmetros de itens e pessoas obtidos com o modelo de Rasch, um dos modelos da teoria de resposta ao item, na avaliação de transtornos da personalidade de acordo com a teoria de Millon. MÉTODO: Participaram do estudo 350 pessoas. A idade variou de 18 a 67 anos (média ± desvio padrão = 27.02±10.13), e 71.7% (n = 251) eram do sexo feminino. Dos 350 participantes, 21.1% (n = 74) responderam afirmativamente sobre estarem em tratamento psiquiátrico e utilizarem medicamento psiquiátrico. O Inventário Dimensional de Transtornos da Personalidade (IDTP), destinado à avaliação dos transtornos da personalidade com base na teoria de Millon, foi aplicado a todos os participantes. Os dados foram analisados por meio do modelo de Rasch. RESULTADOS: De modo geral, os resultados da análise por meio do modelo de Rasch revelaram que o IDTP tem parâmetros psicométricos adequados para a avaliação de transtornos da personalidade. CONCLUSÃO: Entre as contribuições da teoria de resposta ao item para instrumentos clínicos, o mapa de pessoas-itens do modelo Rasch merece destaque enquanto tentativa bem-sucedida de aumentar a compreensão das pontuações clínicas obtidas em resposta a determinadas questões de um teste.

Palavras-chave

Avaliação em saúde, diagnóstico, estudos de validação, escalas de graduação psiquiátrica

References

Millon T, Millon CM, Meagher S, Grossman S, Ramanath R. Personality disorders in modern life. 2004.

Millon T, Grossman S. Overcoming resistant personality disorders. 2007.

Millon T, Grossman S. Moderating severe personality disorders. 2007.

Millon T, Grossman S, Tringone R. The Millon personality spectrometer: a tool for personality spectrum analyses, diagnoses, and treatments. Contemporary directions in psychopathology: scientific foundations of the DSM-V and ICD-11. 2010:391-418.

Millon T, Davis RD. Disorders of personality: DSM-IV and beyond. 1996.

Davis RD. Millon: essentials of his science, theory, classification, assessment, and therapy. J Pers Assess. 1999;72:330-52.

Alchieri JC. Modelo dos estilos de personalidade de Millon: adaptação do Inventário Millon de Estilos de Personalidade. .

Strack S, Millon T. Contributions to the dimensional assessment of personality disorders using Millon's model and the Millon Clinical Multiaxial Inventory (MCMI9-III). J Pers Assess. 2007;89:56-69.

Millon T, Millon CM, Davis RD. MCMI-III manual. 1994.

Craig RJ, Bivens A. Factor structure of the MCMI-III. J Pers Assess. 1998;70:190-6.

Dyce JA, O'Connor BP , Parkins S, Janzen H. Correlational structure of the MCMI-III personality disorder scales and comparison with other data sets. J Pers Assess. 1997;69:568-82.

Rossi G, Van der Ark LA, Sloore H. Factor analysis of the Dutch-language version of the MCMI-III. J Pers Assess. 2007;88:144-57.

Rossi G, Brande IV, Tobac A, Sloore H, Hauben C. Convergent validity of the MCMI-III personality disorder scales and the MMPI-2 scales. J Pers Disord. 2003;17:330-40.

Handler L, Meyer GJ. The importance of teaching and learning personality assessment. Teaching and learning personality assessment. 1997:3-30.

Widiger TA, Trull TJ. Place tectonics in the classification of personality disorder: shifting to a dimensional model. Am Psychol. 2007;62:71-83.

Morana HCP. Identificação do ponto de corte para a escala PCL-R. .

Carvalho LF. Construção e validação do Inventário Dimensional dos Transtornos da Personalidade. .

Carvalho LF, Bartholomeu D, Silva MCR. Instrumentos para avaliação dos transtornos da personalidade no Brasil. Aval Psicol. 2010;9:289-98.

Samuel D, Simms LJ, Clark LA, Livesley J, Widiger TA. An item response theory integration of normal and abnormal personality scales. Pers Disord Theory Res Treat. 2010;1:5-21.

Walton KE, Roberts BW, Krueger RF, Blonigen DM, Hicks BM. Capturing abnormal personality with normal personality inventories: an item response theory approach. J Pers. 2008;76:1623-47.

Primi R. Avanços na interpretação de escalas com a aplicação da teoria de resposta ao item. Aval Psicol. 2004;3:53-8.

Pasquali L, Primi R. Fundamentos da teoria da resposta ao item: TRI. Aval Psicol. 2003;2:99-110.

Pasquali L, Primi R. Fundamentos da teoria de resposta ao item - TRI. Teoria de resposta ao item: teoria, procedimentos e aplicações. 2007:11-52.

Embretson SE, Reise SP. Item response theory for psychologists. 2000.

Wright BD, Masters GN. Rating scale analysis. 1982.

Andrich D. A rating formulation for ordered response categories. Psychometrika. 1978;43:561-73.

Linacre JM. The partial credit model and the one-item rating scale model. Rasch Meas Trans. 2005;19:1000-2.

Nunes CHSS, Primi R, Nunes MFO, Muniz M, Cunha TF, Couto G. Teoria de resposta ao item para otimização de escalas tipo Likert: um exemplo de aplicação. Rev Iberoam Diagn Eval Psicol. 2008;1:51-79.

Balsis S, Gleason MEJ, Woods CM, Oltmanns TF. Age group bias in DSM-IV personality disorder criteria: an item response theory analysis. Psychol Aging. 2007;22:171-85.

Cooke DJ, Michie C. An item response theory analysis of the Hare Psychopathy Checklist--Revised. Psychol Assess. 1997;9:3-14.

Feske U, Kirisci L, Tarter RE, Pilkonis PA. An application of item response theory to the DSM-III-R criteria for borderline personality disorder. J Pers Disord. 2007;21:418-33.

Olatunji BO, Woods C, Jong PJ, Teachman B, Sawchuk , CN , David B. Development and initial validation of an abbreviated Spider Phobia Questionnaire using item response theory. Behav Ther. 2009;40:114-30.

Stelmack J, Szlyk JP, Stelmack T, Babcock-Parziale J, Demers-Turco P, Williams TR. Use of Rasch person-item map in exploratory data analysis: a clinical perspective. J Rehabil Res Dev. 2004;41:233-41.

Blanton H, Jaccard J. Arbitrary metrics in psychology. Am Psychol. 2006;61:27-41.

Embretson SE. The continued search for nonarbitrary metrics in psychology. Am Psychol. 2006;61:50-5.

Primi R, Carvalho LF, Miguel FK, Muniz M. Resultado dos fatores da BFP por meio da teoria de resposta ao item: interpretação referenciada no item. Bateria Fatorial de Personalidade (BFP): manual técnico. 2010:153-70.

Reise SP, Haviland MG. Item response theory and the measurement of clinical change. J Pers Assess. 2005;84:228-38.

Smith Jr EV. Introduction to Rasch measurement theory, models and applications. Introduction to Rasch measurement. 2004:1-24.

Carvalho LF, Primi R. Development of a Brazilian inventory for the assessment of personality disorders based on Millon's model. 2010.

Carvalho LF, Primi R. Personality style assessment in patients with chronic pain. 2009.

Winsteps version 3.69.1. 2009.

Linacre JM, Wright BD. Reasonable mean-square fit values. Rasch Meas Trans. 1994;8:370.

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