Determining Test-Retest Reliability and Internal Consistency of the Persian Version of Personality Inventory for Diagnostic and Statistical Manual of Mental Disorders-5th Edition (PID-5) among Medical Students and Patients with Psychiatric Disorders

Document Type : Original Article (s)

Authors

1 Resident, Department of Psychiatry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran

2 Associate Professor, Mental Health Research Center AND Department of Psychiatry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran

3 Assistant Professor, Mental Health Research Center AND Department of Psychiatry, School of Medicine, Iran University of Medical Sciences, Tehran, Iran

Abstract

AbstractBackground: Given the need for access to reliable diagnostic instruments of mental disorders in Persian language, the present study was designed to translate and determine the reliability and internal consistency of the Personality Inventory for Diagnostic and Statistical Manual of Mental Disorders-5th Edition (PID-5) instrument.Methods: Research sample was selected based on non-random (convenience) method for medical students (healthy population) and patients with personality disorder. After translating PID-5 via forward and backward translation method, test-retest reliability (10-20 days period) and internal consistency of the instrument were determined. This study was conducted in Hazrat-Rasoul Hospital, Iran Psychiatry Hospital and Tehran Psychiatric Institute, Tehran, Iran, during the year 2015. Questionnaires were self-reported and interviews were done by well-trained psychiatry residents.Findings: Totally, 217 individuals were assessed (114 healthy volunteers and 103 patients with personality disorders). Of 25 surveyed facets, eccentricity had the highest Cronbach's alpha coefficient. The lowest alpha was seen for suspiciousness. Overall, in 22 facets from all 25 facets, alpha coefficients were higher than 0.700. To assess test-retest reliability, 28 persons of the medical students group completed the questionnaire for the second time. The correlation coefficient between the two measures in three facets (irresponsibility, perceptual dysregulation and rigid perfectionism) was between 0.800 and 0.900. In other aspects, the correlation coefficient between the two measures was higher than 0.900.Conclusion: The Persian version of PID-5 instrument had good test-retest reliability (r = 0.829 to 0.944) in a short time (about two weeks) and its internal consistency was desirable (Cronbach's alpha = 0.697 to 0.944). 

Keywords

References

  1. American Psychiatric Association. Diagnostic and statistical manual of mental disorders (DSM-5®). Washington, DC: American Psychiatric Pub; 2013.
  2. Widiger TA, Livesley WJ, Clark LA. An integrative dimensional classification of personality disorder. Psychol Assess 2009; 21(3): 243-55.
  3. Banerjee PJ, Gibbon S, Huband N. Assessment of personality disorder. Adv Psychiatr Treat 2009; 15(5): 389-97.
  4. Krueger RF, Derringer J, Markon KE, Watson D, Skodol AE. Initial construction of a maladaptive personality trait model and inventory for DSM-5. Psychol Med 2012; 42(9): 1879-90.
  5. Markon KE, Quilty LC, Bagby RM, Krueger RF. The development and psychometric properties of an informant-report form of the personality inventory for DSM-5 (PID-5). Assessment 2013; 20(3): 370-83.
  6. Al-Dajani N, Gralnick TM, Bagby RM. A psychometric review of the personality inventory for DSM-5 (PID-5): Current status and future directions. J Pers Assess 2016; 98(1): 62-81.
  7. Fossati A, Krueger RF, Markon KE, Borroni S, Maffei C. Reliability and validity of the personality inventory for DSM-5 (PID-5): predicting DSM-IV personality disorders and psychopathy in community-dwelling Italian adults. Assessment 2013; 20(6): 689-708.
  8. Roskam I, Galdiolo S, Hansenne M, Massoudi K, Rossier J, Gicquel L, et al. The psychometric properties of the french version of the personality inventory for DSM-5. PLoS One 2015; 10(7): e0133413.
  9. De Clercq B, De Fruyt F, De Bolle M, Van Hiel A, Markon KE, Krueger RF. The hierarchical structure and construct validity of the PID-5 trait measure in adolescence. J Pers 2014; 82(2): 158-69.
  10. First MB, Gibbon M, Spitzer RL. User's guide for the structured clinical interview for DSM-IV Axis II personality disorders: SCID-II. Washington, DC: American Psychiatric Press; 1997.
  11. Bakhtiary M. Surveying mental disorders in patients with body dysmorphic disorder [MSc Thesis]. Tehran, Iran: Tehran Institute of Psychiatry, Iran University of Medical Sciences; 2000. [In Persian].
  12. John OP, Soto CJ. The importance of being valid: Reliability and the process of construct validation. In: Robins RW, Fraley RC, Krueger RF, Editors. Handbook of research methods in personality psychology. New York, NY: Guilford Press; 2007. p. 461-94.
  13. Iacobucci D, Duhachek A. Advancing alpha: Measuring reliability with confidence. J Consum Psychol 2003; 13(4): 478-87.
  14. Nunnally JC. Psychometric theory. 2nd ed. New York, NY: McGraw-Hill; 1978. p. 528.
  15. Cronbach LJ. Coefficient alpha and the internal structure of tests. Psychometrika 1951; 16(3): 297-334.
  16. Chmielewski M, Watson D. What is being assessed and why it matters: the impact of transient error on trait research. J Pers Soc Psychol 2009; 97(1): 186-202.
  17. Loevinger J. The attenuation paradox in test theory. Psychol Bull 1954; 51(5): 493-504.
  18. Schmidt FL, Le H, Ilies R. Beyond alpha: an empirical examination of the effects of different sources of measurement error on reliability estimates for measures of individual differences constructs. Psychol Methods 2003; 8(2): 206-24.
  19. Sijtsma K. On the use, the misuse, and the very limited usefulness of Cranach’s alpha. Psychometrika 2009; 74(1): 107-20.
  20. Terwee CB, Mokkink LB, Knol DL, Ostelo RW, Bouter LM, de Vet HC. Rating the methodological quality in systematic reviews of studies on measurement properties: a scoring system for the COSMIN checklist. Qual Life Res 2012; 21(4): 651-7.
  21. Dhillon S, Bagby RM. The internal and one-week retest reliability of the PID-5 domains and facets. 2015. [Unpublished].
  22. Wright AG, Calabrese WR, Rudick MM, Yam WH, Zelazny K, Williams TF, et al. Stability of the DSM-5 Section III pathological personality traits and their longitudinal associations with psychosocial functioning in personality disordered individuals. J Abnorm Psychol 2015; 124(1): 199-207.
Journal of Isfahan Medical School
Volume 34, Issue 393 - Serial Number 393
July and August 2016
Pages 901-907

Files

History

  • Receive Date: 30 May 2016
  • Revise Date: 01 November 2024
  • Accept Date: 06 April 2022

Share

How to cite

Statistics