R. Michael Bagby

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Robert Michael Bagby (born 1953) is a Canadian psychologist, senior clinician scientist and director of clinical research at the Centre for Addiction and Mental Health (CAMH). He is a full professor in the Department of Psychiatry, University of Toronto.[1] He became a full professor of psychology at the University of Toronto Scarborough campus in July 2011.

Early research interests revolved around psychology and the law having been educated as a forensic psychologist. He also brought awareness to the personality construct alexithymia by developing the Toronto Alexithymia Scale (TAS-20) to measure its qualities.[2][3][4][5] With the revision of the MMPI-2, Bagby was significantly involved in validating test scores, with a focus on being able to identify individuals feigning and/or malingering mental illness.[6][7][8] More recently, he has investigated the possibility that Five factor model personality facets could be used to identify many psychiatric conditions with a focus on dimensional versus a categorical approaches that the DSM-IV takes and the newer DSM-5 is said to emphasize.[9][10][11][12]


  1. ^ "Dr. Michael Bagby". Centre for Addiction and Mental Health. Retrieved 14 July 2010.
  2. ^ Bagby, RM; Taylor, GJ; Parker, JD; Loiselle, C (1990). "Cross-validation of the factor structure of the Toronto Alexithymia Scale". Journal of Psychosomatic Research. 34 (1): 47–51. doi:10.1016/0022-3999(90)90007-q. PMID 2313613.
  3. ^ Taylor, GJ; Bagby, RM; Parker, JD (1992). "The Revised Toronto Alexithymia Scale: some reliability, validity, and normative data". Psychotherapy and Psychosomatics. 57 (1–2): 34–41. doi:10.1159/000288571. PMID 1584897.
  4. ^ Bagby, RM; Parker, JD; Taylor, GJ (January 1994). "The twenty-item Toronto Alexithymia Scale--I. Item selection and cross-validation of the factor structure". Journal of Psychosomatic Research. 38 (1): 23–32. doi:10.1016/0022-3999(94)90005-1. PMID 8126686.
  5. ^ Bagby, RM; Taylor, GJ; Parker, JD (January 1994). "The Twenty-item Toronto Alexithymia Scale--II. Convergent, discriminant, and concurrent validity". Journal of Psychosomatic Research. 38 (1): 33–40. doi:10.1016/0022-3999(94)90006-x. PMID 8126688.
  6. ^ Gillis, JR; Rogers, R; Bagby, RM (August 1991). "Validity of the M Test: simulation-design and natural-group approaches". Journal of Personality Assessment. 57 (1): 130–40. doi:10.1207/s15327752jpa5701_15. PMID 1920026.
  7. ^ Rogers, R; Kropp, PR; Bagby, RM; Dickens, SE (September 1992). "Faking specific disorders: a study of the Structured Interview of Reported Symptoms (SIRS)". Journal of Clinical Psychology. 48 (5): 643–8. doi:10.1002/1097-4679(199209)48:5<643::aid-jclp2270480511>3.0.co;2-2. PMID 1401150.
  8. ^ Bagby, RM; Rogers, R; Buis, T (March 1994). "Malingered and Defensive Response Styles on the MMPI-2: An Examination of Validity Scales". Assessment. 1 (1): 31–8. doi:10.1177/1073191194001001005. PMID 9463497. S2CID 24823628.
  9. ^ Bagby, RM; Schuller, DR; Levitt, AJ; Joffe, RT; Harkness, KL (Jun 5, 1996). "Seasonal and non-seasonal depression and the five-factor model of personality". Journal of Affective Disorders. 38 (2–3): 89–95. doi:10.1016/0165-0327(95)00097-6. PMID 8791178.
  10. ^ Bagby, RM; Bindseil, KD; Schuller, DR; Rector, NA; Young, LT; Cooke, RG; Seeman, MV; McCay, EA; Joffe, RT (May 5, 1997). "Relationship between the five-factor model of personality and unipolar, bipolar and schizophrenic patients". Psychiatry Research. 70 (2): 83–94. doi:10.1016/s0165-1781(97)03096-5. PMID 9194202. S2CID 11612933.
  11. ^ Rector, NA; Hood, K; Richter, MA; Bagby, RM (October 2002). "Obsessive-compulsive disorder and the five-factor model of personality: distinction and overlap with major depressive disorder". Behaviour Research and Therapy. 40 (10): 1205–19. doi:10.1016/s0005-7967(02)00024-4. PMID 12375729.
  12. ^ Rector, NA; Bagby, RM; Huta, V; Ayearst, LE (May 15, 2012). "Examination of the trait facets of the five-factor model in discriminating specific mood and anxiety disorders". Psychiatry Research. 199 (2): 131–9. doi:10.1016/j.psychres.2012.04.027. PMID 22595418. S2CID 5471685.