1932

Abstract

Can experts remain objective and accurate when one particular side in adversarial legal proceedings retains them? Despite long-standing concerns from the legal system and the general public, research has only recently explored whether experts can provide opinions unbiased by the side that retained them. This review addresses some of the factors that may cause disagreements between opposing experts. After summarizing recent field and experimental studies on mental health evaluations by forensic experts, we conclude that working for one side in an adversarial case causes some experts' opinions to drift toward the party retaining their services, even on ostensibly objective instruments and procedures. We call this process adversarial allegiance. The mechanisms that underlie adversarial allegiance among forensic experts are likely similar to the unconscious heuristics and cognitive biases that compromise judgment in a variety of other settings, but these will require further study to understand, and ultimately reduce, adversarial allegiance.

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2015-11-03
2024-04-23
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Literature Cited

  1. Ægisdóttir S, White MJ, Spengler PM, Maugherman AS, Anderson LA. et al. 2006. The meta-analysis of clinical judgment project: fifty-six years of accumulated research on clinical versus statistical prediction. Couns. Psychol. 34:341–82 [Google Scholar]
  2. Albert DM, Blanchard JW, Knox BL. 2012. Ensuring appropriate expert testimony for cases involving the “shaken baby.”. J. Am. Med. Assoc. 308:39–40 [Google Scholar]
  3. Am. Acad. Psychiatry Law 2005. Ethics Guidelines for the Practice of Forensic Psychiatry. Bloomfield, CT: Am. Acad. Psychiatry Law http://www.aapl.org/ethics.htm
  4. Am. Psychol. Assoc 2013. Specialty guidelines for forensic psychology. Am. Psychol. 68:7–19 [Google Scholar]
  5. Am. Psychol. Assoc. Comm. Ethical Guidel. Forensic Psychol 1991. Specialty guidelines for forensic psychologists. Law Hum. Behav. 15:655–65 [Google Scholar]
  6. Anderson M. 2008. The shaken baby debate. Discover 29:60–68 [Google Scholar]
  7. Beckham JC, Annis LV, Gustafson DJ. 1989. Decision making and examiner bias in forensic expert recommendations for not guilty by reason of insanity. Law Hum. Behav. 13:79–87 [Google Scholar]
  8. Bernstein DE. 2008. Expert witnesses, adversarial bias, and the (partial) failure of the Daubert revolution. Iowa Law Rev. 93:101–37 [Google Scholar]
  9. Blair E. 2014. The fine art of pricing Detroit's collection. Natl. Public Radio, All Things Considered Sept 4. http://www.npr.org/2014/09/04/345868771/the-fine-art-of-pricing-detroits-collection [Google Scholar]
  10. Blair P, Marcus D, Boccaccini MT. 2008. Is there an allegiance effect for assessment instruments? Actuarial risk assessment as an exemplar. Clin. Psychol. Sci. Pract. 15:346–60 [Google Scholar]
  11. Boccaccini MT, Brodsky SL. 2002. Believability of expert and lay witnesses: implications for trial consultation. Prof. Psychol. Res. Pract. 33:4384–88 [Google Scholar]
  12. Boccaccini MT, Marcus DK, Murrie DC. In press. Allegiance effects in clinical psychology research and practice. Psychological Science Under Scrutiny: Recent Challenges and Proposed Remedies S Lilienfeld, ID Waldman Hoboken, NJ: Wiley & Sons [Google Scholar]
  13. Boccaccini MT, Murrie DC, Rufino KA, Gardner BO. 2014. Evaluator differences in PCL-R factor and facet level scoring. Law Hum. Behav. 38:337–45 [Google Scholar]
  14. Boccaccini MT, Turner D, Murrie DC. 2008. Do some evaluators report consistently higher or lower psychopathy scores than others? Findings from a statewide sample of sexually violent predator evaluations. Psychol. Public Policy Law 14:262–83 [Google Scholar]
  15. Brodsky SL. 1991. Testifying in Court: Guidelines and Maxims for the Expert Witness Washington, DC: Am. Psychol. Assoc.
  16. Brodsky SL. 2013. Testifying in Court: Guidelines and Maxims for the Expert Witness Washington, DC: Am. Psychol. Assoc, 2nd ed..
  17. Chadwick DL, Krous HF. 1997. Irresponsible testimony by medical experts in cases involving the physical abuse and neglect of children. Child Maltreat. 4:2313–21 [Google Scholar]
  18. Chevalier C, Boccaccini MT, Murrie DC, Varela JG. 2015. Static-99R reporting practices in sexually violent predator cases: Does norm selection reflect adversarial allegiance?. Law Hum. Behav. 39:209–18 [Google Scholar]
  19. Comm. Identif. Needs Forensic Sci. Community, Natl. Res. Counc 2009. Strengthening Forensic Science in the United States: A Path Forward. Washington, DC: Natl. Acad. Press
  20. Commons ML, Miller PM, Gutheil TG. 2012. Experts' perceptions of expert bias. Int. J. Law Psychiatry 35:362–71 [Google Scholar]
  21. Cooper J, Neuhaus IM. 2000. The “hired gun” effect: assessing the effect of pay, frequency of testifying, and credentials on the perception of expert testimony. Law Hum. Behav. 24:2149–71 [Google Scholar]
  22. DeMatteo D, Edens JF. 2006. The role and relevance of the Psychopathy Checklist-Revised in court: a case law survey of US courts (1991–2004). Psychol. Public Policy Law 11:62–82 [Google Scholar]
  23. DeMatteo D, Edens JF, Galloway M, Cox J, Smith ST. et al. 2014a. Investigating the role of the Psychopathy Checklist–Revised in United States case law. Psychol. Public Policy Law 20:96–107 [Google Scholar]
  24. DeMatteo D, Edens JF, Galloway M, Toney Smith S, Cox J, Koller JP. 2014b. The role and reliability of the Psychopathy Checklist-Revised in U.S. sexually violent predator evaluations: a case law survey. Law Hum. Behav. 38:248–55 [Google Scholar]
  25. Diamond BL. 1959. The fallacy of the impartial expert. Arch. Crim. Psychodyn. 3:221–36 [Google Scholar]
  26. Dror IE, Cole SA. 2010. The visit in “blind” justice: expert perception, judgment, and visual cognition in forensic pattern recognition. Psychon. Bull. Rev. 17:161–67 [Google Scholar]
  27. Dror IE, Hampikian G. 2011. Subjectivity and bias in forensic DNA mixture interpretation. Sci. Justice 51:204–8 [Google Scholar]
  28. Edens JF, Cox J, Smith ST, DeMatteo D, Sörman K. 2015. How reliable are psychopathy checklist revised scores in Canadian criminal trials? A case law review. Psychol. Assess. 26:447–56 [Google Scholar]
  29. Epperson DL, Kaul JD, Goldman R, Hout S, Hesselton D. et al. 1998. Minnesota Sex Offender Screening Tool-Revised (MnSOST-R) St. Paul: Minn. Dep. Correct. [Google Scholar]
  30. Foster WL. 1897. Expert testimony, prevalent complaints and proposed remedies. Harvard Law Rev. 11:169–86 [Google Scholar]
  31. Franklin K. 2012. Forensic psychologist blackballed over competency opinions. In the News: Forensic Psychol. Criminol. Psychol.-Law Feb. 28. http://forensicpsychologist.blogspot.com/2012/02/forensic-psychologist-blackballed-over.html
  32. Goldstein AG. 2006. Forensic psychology: toward a standard of care. Forensic Psychology: Emerging Topics and Expanding Roles A Goldstein 683–707 Hoboken, NJ: Wiley & Sons [Google Scholar]
  33. Gomez JCB. 2005. Silencing hired guns: ensuring honesty in medical expert testimony through state legislation. J. Legal Med. 26:385–99 [Google Scholar]
  34. Grisso T. 1998. Forensic Evaluation of Juveniles Sarasota, FL: Prof. Res. Press
  35. Grisso T. 2003. Evaluating Competencies: Forensic Assessments and Instruments New York: Plenum
  36. Grove WM, Zald DH, Lebow BS, Snitz BE, Nelson C. 2000. Clinical versus mechanical prediction: a meta-analysis. Psychol. Assess. 12:19–30 [Google Scholar]
  37. Hagen MA. 1997. Whores of the Court: The Fraud of Psychiatric Testimony and the Rape of American Justice New York: Regan
  38. Hand L. 1901. Historical and practical considerations regarding expert testimony. Harvard Law Rev. 15:40–58 [Google Scholar]
  39. Hanson RK, Morton-Bourgon KE. 2009. The accuracy of recidivism risk assessments for sexual offenders: a meta-analysis of 118 prediction studies. Psychol. Assess. 21:1–21 [Google Scholar]
  40. Hanson RK, Thornton D. 2000. Improving risk assessments for sex offenders: a comparison of three actuarial scales. Law Hum. Behav. 24:119–36 [Google Scholar]
  41. Hare RD. 2003. The Hare PCL-R: Technical Manual Toronto, Can: Multi-Health Syst, 2nd ed..
  42. Harris PB, Boccaccini MT, Murrie DC. 2014. Rater differences in psychopathy measure scoring and predictive validity. Law Hum. Behav. doi:10.1037/lhb0000115
  43. Heilbrun K. 2009. Evaluation for Risk of Violence in Adults New York: Oxford Univ. Press
  44. Heilbrun K, Brooks S. 2010. Forensic psychology and forensic science: a proposed agenda for the next decade. Psychol. Public Policy Law 16:3219–53 [Google Scholar]
  45. Helmus L, Thornton D, Hanson RK, Babchishin KM. 2012. Improving the predictive accuracy of Static-99 and Static-2002 with older sex offenders: revised age weights. Sex. Abuse J. Res. Treat. 24:64–101 [Google Scholar]
  46. Huber PW. 1993. Galileo's Revenge: Junk Science in the Courtroom New York: Basic Books
  47. Kansas v. Hendricks 521 U.S. 346 1997.
  48. Kassin SM, Drizin SA, Grisso T, Gudjonsson GH, Leo RA. et al. 2009. Police-induced confessions: risk factors and recommendations. Law Hum. Behav. 34:3–38 [Google Scholar]
  49. Krafka C, Dunn MA, Johnson MT, Cecil JS, Miletich D. 2002. Judge and attorney experiences, practices, and concerns regarding expert testimony in federal civil trials. Psychol. Public Policy Law 8:309–32 [Google Scholar]
  50. Lloyd CD, Clark HJ, Forth AE. 2010. Psychopathy, expert testimony, and indeterminate sentences: exploring the relationship between Psychopathy Checklist-Revised testimony and trial outcome in Canada. Legal Criminol. Psychol. 15:2323–39 [Google Scholar]
  51. Luborsky L, Diguer L, Seligman DA, Rosenthal R, Krause ED. et al. 1999. The researcher's own therapy allegiances: a “wild card” in comparisons of treatment efficacy. Clin. Psychol. Sci. Pract. 6:95–106 [Google Scholar]
  52. Luborsky L, Singer B, Luborsky L. 1975. Comparative studies of psychotherapies: Is it true that everyone has won and all must have prizes?. Arch. Gen. Psychiatry 32:8995–1008 [Google Scholar]
  53. McDermott PA, Watkins MW, Rhoad AM. 2014. Whose IQ is it? Assessor bias variance in high-stakes psychological assessment. Psychol. Assess. 26:207–14 [Google Scholar]
  54. Miller AK, Rufino KA, Boccaccini MT, Jackson RL, Murrie DC. 2011. On individual differences in person perception: raters' personality traits relate to their Psychopathy Checklist-Revised scoring tendencies. Assessment 18:253–60 [Google Scholar]
  55. Mnookin J. 2007. Idealizing science and demonizing experts: an intellectual history of expert evidence. Va. Law Rev. 52:1018–11 [Google Scholar]
  56. Mnookin J. 2008. Expert evidence, partisanship, and epistemic confidence. Brooklyn Law Rev. 73:587–611 [Google Scholar]
  57. Mossman D. 1999. “Hired guns,” “whores,” and “prostitutes”: case law references to clinicians of ill repute. J. Am. Acad. Psychiatry Law 27:3414–25 [Google Scholar]
  58. Murrie DC, Boccaccini MT, Guarnera LA, Rufino KA. 2013. Are forensic experts biased by the side that retained them?. Psychol. Sci. 24:1889–97 [Google Scholar]
  59. Murrie DC, Boccaccini MT, Johnson JT, Janke C. 2008a. Does interrater (dis)agreement on Psychopathy Checklist scores in sexually violent predator trials suggest partisan allegiance in forensic evaluations?. Law Hum. Behav. 32:4352–62 [Google Scholar]
  60. Murrie DC, Boccaccini MT, Turner DB, Meeks M, Woods C. et al. 2009. Rater (dis)agreement on risk assessment measures in sexually violent predator proceedings: evidence of adversarial allegiance in forensic evaluation?. Psychol. Public Policy Law 15:119–53 [Google Scholar]
  61. Murrie DC, Boccaccini MT, Zapt PA, Warren JI, Henderson CE. 2008b. Clinician variation in findings of competence to stand trial. Psychol. Public Policy Law 14:177–93 [Google Scholar]
  62. Murrie DC, Warren JI. 2005. Clinician variation in rates of legal sanity opinions: implications for self-monitoring. Prof. Psychol. Res. Pract. 36:519–24 [Google Scholar]
  63. Neal TMS 2011. The objectivity demand: experiences and behaviors of psychologists in capital case evaluations PhD Thesis, Univ. Alabama, Tuscaloosa
  64. Neal TMS, Grisso T. 2014. The cognitive underpinnings of bias in forensic mental health evaluations. Psychol. Public Policy Law 20:200–11 [Google Scholar]
  65. Otto RK. 1989. Bias and expert testimony of mental health professionals in adversarial proceedings: a preliminary investigation. Behav. Sci. Law 7:2267–73 [Google Scholar]
  66. Otto RK, DeMier R, Boccaccini MT. 2014. Forensic Reports and Testimony: Effective Communication for Psychologists and Psychiatrists Hoboken, NJ: Wiley
  67. Otto RK, Douglas KS. 2010. Handbook of Violence Risk Assessment New York: Routledge
  68. Otto RK, Heilbrun K. 2002. The practice of forensic psychology: a look toward the future in light of the past. Am. Psychol. 57:5–18 [Google Scholar]
  69. Phenix A, Helmus L, Hanson RK. 2012. Static-99R and Static-2002R Evaluators' Workbook July. http://static99.org/
  70. Rogers R. 1987. Ethical dilemmas in forensic evaluations. Behav. Sci. Law 5:149–60 [Google Scholar]
  71. Rogers R, Fiduccia CE. 2015. Forensic assessment instruments. APA Handbook of Forensic Psychology: Volume 1. Individual and Situational Influences in Criminal and Civil Contexts BL Cutler, PA Zapf 19–34 Washington, DC: Am. Psychol. Assoc. [Google Scholar]
  72. Rufino KA, Boccaccini MT, Guy LS. 2011. Scoring subjectivity and item performance on measures used to assess violence risk: the PCL-R and HCR-20 as exemplars. Assessment 18:453–63 [Google Scholar]
  73. Saks MJ, Risinger DM, Rosenthal R, Thompson WC. 2003. Context effects in forensic science: a review and application of the science of science to crime laboratory practice in the United States. Sci. Justice 43:277–90 [Google Scholar]
  74. Sheppard BE, Vidmar N. 1980. Adversary pretrial procedures and testimonial evidence: effects of lawyer's role and Machiavellianism. J. Personal. Soc. Psychol. 39:320–32 [Google Scholar]
  75. Shuman DW, Whitaker E, Champagne A. 1994. An empirical examination of the use of expert witnesses in the courts—part II: a three city study. Jurimetrics 34:193–208 [Google Scholar]
  76. Skeem JL, Polaschek DL, Patrick CJ, Lilienfeld SO. 2011. Psychopathic personality bridging the gap between scientific evidence and public policy. Psychol. Sci. Public Interest 12:395–162 [Google Scholar]
  77. United States v. Alvarez 519 F. 2d 1036 (3rd Cir. 1975.
  78. United States ex rel. Edney v. Smith 425 F. Supp. 1038 (E.D.N.Y 1976.
  79. Vidmar N, Laird NM. 1983. Adversary social roles: their effects on witnesses' communication of evidence and the assessment of adjudicators. J. Personal. Soc. Psychol. 44:888–98 [Google Scholar]
  80. Vitacco MJ, Erikson SK, Kurus S, Apple BN. 2012. The role of the Violence Risk Appraisal Guide and Historical, Clinical, Risk-20 in U.S. courts: a case law survey. Psychol. Public Policy Law 18:361–91 [Google Scholar]
  81. Wells GL, Small M, Penrod S, Malpass RS, Fulero SM, Brimacombe CAE. 1998. Eyewitness identification procedures: recommendations for lineups and photospreads. Law Hum. Behav. 22:1–39 [Google Scholar]
  82. Wigmore J. 1923. A Treatise on the Anglo-American System of Evidence in Trials at Common Law: Including the Statutes and Judicial Decisions of All Jurisdictions of the United States and Canada Boston, MA: Little, Brown
  83. Zusman J, Simon J. 1983. Differences in repeated psychiatric examinations of litigants to a lawsuit. Am. J. Psychiatry 140:1300–4 [Google Scholar]
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