Encyclopedia of Clinical Neuropsychology

Living Edition
| Editors: Jeffrey Kreutzer, John DeLuca, Bruce Caplan

Reliable Change Index

  • Grant L. Iverson
Living reference work entry

Latest version View entry history

DOI: https://doi.org/10.1007/978-3-319-56782-2_1242-3

Definition

Jacobson and Truax (1991) proposed a psychometric method for determining if a change on a psychological test is reliable. That is, does the change represent a real improvement or deterioration in the patient’s clinical condition – or does it simply reflect measurement error? This method involved the calculation of a “reliable change index” (RCI). The original formula used by Jacobson and Truax has been debated, and modified several times, over the years (Hageman and Arrindell 1993, 1999a, b; Hsu 1989, 1999; Speer 1992; Speer and Greenbaum 1995). The reliable change “index” is the derived score from this formula, and it is expressed as a z-score. As such, RCI scores are associated with confidence intervals (CI) for measurement error surrounding test-retest difference scores (e.g., z = 1.28, 0.80 CI; z = 1.64, 0.90 CI; and z= 1.96 = 0.95 CI). The original formula for calculating the RCI is not provided here, because it has been modified several times and because it yields a...

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References and Readings

  1. Barr, W. B., & McCrea, M. (2001). Sensitivity and specificity of standardized neurocognitive testing immediately following sports concussion. Journal of the International Neuropsychological Society, 7(6), 693–702.CrossRefGoogle Scholar
  2. Brooks, B. L., Sherman, E. M. S., Iverson, G. L., Slick, D. J., & Strauss, E. (2011). Psychometric foundations for the interpretation of neuropsychological test results. In M. R. Schoenberg & J. G. Scott (Eds.), The little black book of neuropsychology: A syndrome-based approach (pp. 893–922). New York, NY: Springer.Google Scholar
  3. Chelune, G. J. (2003). Assessing reliable neuropsychological change. In R. D. Franklin (Ed.), Prediction in forensic and neuropsychology: Sound statistical practices (pp. 65–88). Mahwah: Erlbaum.Google Scholar
  4. Chelune, G. J., Naugle, R. I., Luders, H., Sedlak, J., & Awad, I. A. (1993). Individual change after epilepsy surgery: Practice effects and base-rate information. Neuropsychology, 7, 41–52.CrossRefGoogle Scholar
  5. Duff K. (2012). Evidence-based indicators of neuropsychological change in the individual patient: relevant concepts and methods. Archives of Clinical Neuropsychology, 27(3), 248–261.CrossRefPubMedGoogle Scholar
  6. Hageman, W. J., & Arrindell, W. A. (1993). A further refinement of the reliable change (RC) index by improving the pre-post difference score: Introducing RCID. Behaviour Research and Therapy, 31(7), 693–700.CrossRefGoogle Scholar
  7. Hageman, W. J., & Arrindell, W. A. (1999a). Clinically significant and practical! Enhancing precision does make a difference. Reply to McGlinchey and Jacobson, Hsu, and Speer. Behaviour Research and Therapy, 37(12), 1219–1233.CrossRefGoogle Scholar
  8. Hageman, W. J., & Arrindell, W. A. (1999b). Establishing clinically significant change: Increment of precision and the distinction between individual and group level of analysis. Behaviour Research and Therapy, 37(12), 1169–1193.CrossRefGoogle Scholar
  9. Heaton, R. K., Temkin, N. R., Dikmen, S. S., Avitable, N., Taylor, M. J., Marcotte, T. D., et al. (2001). Detecting change: A comparison of three neuropsychological methods using normal and clinical samples. Archives of Clinical Neuropsychology, 16, 75–91.CrossRefGoogle Scholar
  10. Hinton-Bayre, A. D., Geffen, G. M., Geffen, L. B., McFarland, K. A., & Friis, P. (1999). Concussion in contact sports: Reliable change indices of impairment and recovery. Journal of Clinical and Experimental Neuropsychology, 21(1), 70–86.CrossRefGoogle Scholar
  11. Hsu, L. M. (1989). Reliable changes on psychotherapy: Taking into account regression toward the mean. Behavioral Assessment, 11, 459–467.Google Scholar
  12. Hsu, L. M. (1999). A comparison of three methods of identifying reliable and clinically significant client changes: Commentary on Hageman and Arrindell. Behaviour Research and Therapy, 37, 1195–1202.CrossRefGoogle Scholar
  13. Iverson, G. L. (1998). Interpretation of Mini-Mental State Examination scores in community-dwelling elderly and geriatric neuropsychiatry patients. International Journal of Geriatric Psychiatry, 13(10), 661–666.CrossRefGoogle Scholar
  14. Iverson, G. L. (2001). Interpreting change on the WAIS-III/WMS-III in clinical samples. Archives of Clinical Neuropsychology, 16, 183–191.CrossRefGoogle Scholar
  15. Iverson, G. L., & Green, P. (2001). Measuring improvement or decline on the WAIS-R in inpatient psychiatry. Psychological Reports, 89(2), 457–462.CrossRefGoogle Scholar
  16. Iverson, G. L., Lovell, M. R., & Collins, M. W. (2003). Interpreting change on ImPACT following sport concussion. The Clinical Neuropsychologist, 17(4), 460–467.CrossRefGoogle Scholar
  17. Jacobson, N. S., & Truax, P. (1991). Clinical significance: A statistical approach to defining meaningful change in psychotherapy research. Journal of Consulting and Clinical Psychology, 59(1), 12–19.CrossRefGoogle Scholar
  18. Jacobson, N. S., Roberts, L. J., Berns, S. B., & McGlinchey, J. B. (1999). Methods for defining and determining the clinical significance of treatment effects: Description, application, and alternatives. Journal of Consulting and Clinical Psychology, 67(3), 300–307.CrossRefGoogle Scholar
  19. Ogles, B. M., Lambert, M. J., & Masters, K. S. (1996). Assessing outcome in clinical practice. Boston: Allyn and Bacon.Google Scholar
  20. Speer, D. C. (1992). Clinically significant change: Jacobson and Truax (1991) revisited. Journal of Consulting and Clinical Psychology, 60(3), 402–408.CrossRefGoogle Scholar
  21. Speer, D. C., & Greenbaum, P. E. (1995). Five methods for computing significant individual client change and improvement rates: Support for an individual growth curve approach. Journal of Consulting and Clinical Psychology, 63(6), 1044–1048.CrossRefGoogle Scholar
  22. Temkin, N. R., Heaton, R. K., Grant, I., & Dikmen, S. S. (1999). Detecting significant change in neuropsychological test performance: A comparison of four models. Journal of the International Neuropsychological Society, 5(4), 357–369.CrossRefGoogle Scholar
  23. Wechsler, D., Holdnack, J. A., & Drozdick, L. W. (2009). Wechsler Memory Scale – Fourth Edition, technical and interpretive manual. San Antonio: NCS Pearson.Google Scholar
  24. White, T., & Stern, R. A. (2003). Neuropsychological assessment battery: Psychometric and technical manual. Lutz: Psychological Assessment Resources.Google Scholar

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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of Physical Medicine and RehabilitationSpaulding Rehabilitation Hospital, Harvard Medical SchoolCharlestownUSA