Forensic Psychology

by Graham M Davies

  Impaired functioning of the amygdala may confer other deficits on psychopaths including compromised capacities for learning through aversive conditioning. The amygdala represents the neural structure, which is critically involved in the process of aversive conditioning (LaBar & LeDoux, 1996; Phillips & LeDoux, 1992), that is, the process by which an association is formed between a neutral stimulus and an aversive stimulus, such that the neutral stimulus acquires the capacity to elicit an aversion response. Neuroimaging-based experiments have likewise demonstrated that the amygdala is central to the formation of conditioned emotional responses in humans (Büchel & Dolan, 2000; Büchel, Morris, Dolan, & Friston 1998).

  Studies have demonstrated that convicted psychopaths have a compromised ability to make aversive conditioned associations, which is accompanied by abnormal amygdala functioning (Flor, Birbaumer, Hermann, Ziegler, & Patrick, 2002; Birbaumer et al., 2005). Blair, Peschardt, Budhani, Mitchell, & Pine (2006) have argued that these deficits, which are thought to be present in childhood, limit the ability to learn that one’s actions are causing distress to another, and thus compromise early moral socialisation. This view is supported by the work of Raine and colleagues who have shown in longitudinal studies that poor aversive conditioning capacity is associated with greater aggressive behaviour and crime in later life (Raine, Venables, & Williams, 1996; Gao, Raine, Vanables, Dawson, & Mednick, 2010).

  3.10 NEUROCHEMISTRY OF PSYCHOPATHY

  Relatively little is known about the neurochemistry underlying psychopathy. One noticeable exception has been a study on oxytocin levels in offenders. Oxytocin is a neuropeptide that is released from the paraventricular nucleus of the hypothalamus. It acts in the periphery to cause uterine contractions during labour and is involved in milk release during breast-feeding. The peptide, however, is also released into the brain where it acts on a diverse array of limbic, striatal and prefrontal structures. Within the brain, oxytocin plays critical roles by binding to receptors in the medial nuclei of the amygdala to drive the need to form attachments and cement interpersonal bonds (Insel & Winslow, 1998; Panksepp, Nelson, & Bekkedal, 1997; Nelson & Panskepp, 1998). It can also act on other nuclei within the amygdala to reduce fear responses (Kirsch et al., 2005).

  The levels of intracerebral oxytocin can be raised by taking the neuropeptide intranasally. This process has been associated with the increased expression of many prosocial behaviours including trust (Baumgartner, Heinrichs, Vonlanthen, Fischbacher, & Fehr, 2008; Kosfeld, Heinrichs, Zac, Fischbacher, & Fehr, 2005), emotional empathy (Hurlemann et al., 2010) and altruism (Barraza, McCullough, Ahmadi, & Zak, 2011). However, recent findings have also shown that intranasal oxytocin can increase envy and gloating (Shamay-Tsoory et al., 2009), and intergroup bias, including a tendency to dehumanise racial outgroups (De Dreu, Greer, Van Kleef, Shalvi, & Handgraaf, 2011). Thus, oxytocin seems to enhance both prosocial and antisocial emotions, depending on the specific situation and context in which the participant is placed.

  PHOTO 3.3 Oxytocin levels were found to be grossly elevated in those convicted of serious offences.

  Source: © Mark Harvey / Alamy Stock Photo

  Mitchell et al. (2013), in their seminal but largely overlooked work showed that urinary oxytocin levels, which can act as an index of cerebral levels, were grossly elevated in convicted serious offenders. Moreover, the oxytocin levels were highly correlated with Factor 2 scores on the PCL-R, indicative of raised oxytocin levels in relation to the lifestyle and antisocial features of the disorder. While controversial, this finding does have parallels in the developmental literature. Thus, Seltzer, Ziegler, Connolly, Prososki, & Pollak (2014) showed that adolescent girls who had experienced severe early abuse showed grossly elevated urinary oxytocin levels, and lower levels of salivary cortisol following a laboratory stressor. These findings taken together suggest that early maltreatment, a common characteristic observed among incarcerated offenders, may lead to neurochemical changes that have been linked with antisocial personality traits and behaviours in later life.

  3.11 CONCLUSIONS

  Current research suggests that psychopathic traits are identifiable in children and adults, and among forensic and non-forensic samples. These traits have a genetic component and are often accompanied by a variety of cognitive, affective and functional correlates. However, despite recent advances, a number of debates still exist in the literature. These include the extent to which subtypes of psychopathy exist, and whether or not psychopaths can experience feelings of anxiety or nervousness. The aggressive and antisocial behaviours of psychopaths are typified by instrumental motives and the use of violence for personal gain. The neurobiological underpinnings of psychopathic personality are becoming increasingly well understood with the development of more advanced and sophisticated techniques for brain imaging and neuropsychological assessment. Increasing knowledge on the underlying mechanisms will lead to more refined techniques for intervening and working with both children and adults who show psychopathic features and problematic behaviours.

  3.12 SUMMARY

  Psychopathy refers to a constellation of personality traits associated with antisocial behaviour and instrumental aggression

  Both genetic and environmental factors have been linked with the development of psychopathic traits

  Psychopaths show affective abnormalities including difficulty processing and learning from aversive social and emotional cues

  The neurobiology of psychopathy is thought to be closely linked with amygdala dysfunction and impaired empathic development

  ESSAY/DISCUSSION QUESTIONS

  To what extent can psychopathy be distinguished from other disorders of personality that are characterised by antisocial behaviour?

  Discuss the evidence for psychopathy as a heritable disorder.

  Are psychopaths anxious?

  What is the evidence to support the claim that psychopathy is a disorder of emotion processing?

  ANNOTATED READING LIST

  Blair, J., Mitchell, D., & Blair, K. (2005). The psychopath: emotion and the brain. Oxford: Blackwell Publishing. This interesting text discusses a number of controversial issues, including the number of psychopaths in society and the underlying mechanisms for psychopaths’ antisocial behaviour.

  Hare, R. D. (1999). Without conscience: The disturbing world of the psychopaths among us. New York: Guilford Press. From the author of the Psychopathy Checklist – Revised (PCL-R), this text uses real-life cases to describe the hallmark features of psychopathy.

  Kiehl, K. (2014). The psychopath whisperer: Inside the minds of those without a conscience. London: Oneworld Publications. In this book, Kent Kiehl reviews the evidence from neuroscience, including findings from his own brain imaging and psychophysiology research, to highlight emotion-processing deficits among psychopaths.

  Patrick, C. J. (Ed.). (2005). Handbook of psychopathy. New York: Guilford Press. Here Christopher Patrick presents an excellent collection of edited chapters covering definition, assessment, clinical and applied issues, and etiological mechanisms, including genetics, family factors, brain function and neurochemistry.

  REFERENCES

  Adolphs, R. (2002). Neural systems for recognizing emotion. Current Opinion in Neurobiology, 12, 169–177.

  Adolphs, R., Gosselin, F., Buchanan, T. W., Tranel, D., Schyns, P., & Damasio, A. R. (2005). A mechanism for impaired fear recognition after amygdala damage. Nature, 433, 68–72.

  Adolphs, R., Tranel, D., Damasio, H., & Damasio, A. (1994). Impaired recognition of emotion in facial expressions following bilateral damage to the human amygdala. Nature, 372, 669–672.

  Adolphs, R., Tranel, D., Damasio, H., & Damasio, A. R. (1995). Fear and the human amygdala. The Journal of Neuroscience, 15, 5879–5891.

  Adolphs, R., Tranel, D., Hamann, S., Young, A. W., Calder, A. J., Phelps, E. A., & Damasio, A. R. (1999). Recognition of facial emotion in nine individuals with bilateral amygdala damage. Neuropsychologia, 37, 1111–1117.

  Ainsworth, M
. D. S., Blehar, M. C., Waters, E., & Wall, S. (1978). Patterns of attachment: A psychological study of the Strange Situation. Hillsdale, NJ: Erlbaum.

  Allen, J.P., Hauser, S.T., & Borman-Spurell, E. (1996), Attachment theory as a framework for understanding sequelae of severe adolescent psychopathology: An 11-year follow-up study. Journal of Consulting and Clinical Psychology, 64, 254–263.

  American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorder (5th ed.). Washington, DC; Author.

  Barraza, J. A., McCullough, M. E., Ahmadi, S., & Zak, P. J. (2011). Oxytocin infusion increases charitable donations regardless of monetary resources. Hormones and Behavior, 60, 148–151.

  Bartholomew, K., & Horowitz, L. M. (1991). Attachment styles among young adults: A test of a four-category model. Journal of Personality and Social Psychology, 61, 226–244.

  Baumgartner, T., Heinrichs, M., Vonlanthen, A., Fischbacher, U., & Fehr, E. (2008). Oxytocin shapes the neural circuitry of trust and trust adaptation in humans. Neuron, 58, 639–650.

  Birbaumer, N., Veit, R., Lotze, M., Erb, M., Hermann, C., Grodd, W., & Flor, H. (2005). Deficient fear conditioning in psychopathy: A functional magnetic resonance imaging study. Archives of General Psychiatry, 62, 799.

  Blair, R. J. R. (1995). A cognitive developmental approach to morality: Investigating the psychopath. Cognition, 57, 1–29.

  Blair, R. J. R. (2001). Neurocognitive models of aggression, the antisocial personality disorders and the psychopath. Journal of Neurology, Neurosurgery & Psychiatry, 71, 727–731.

  Blair, R. J. R. (2003). Facial expressions, their communicatory functions and neuro-cognitive substrates. Philosophical Transactions of the Royal Society of London, series B, 358, 561–572.

  Blair, R. J. R., Colledge, E., Murray, L., & Mitchell, D. G. (2001). A selective impairment in the processing of sad and fearful expressions in children with psychopathic tendencies. Journal of Abnormal Child Psychology, 29, 491–498.

  Blair, R. J. R., Mitchell, D. G. V., Peschardt, K. S., Colledge, E., Leonard, R. A., Shine, J. H., Murray, L. K., & Perrett, D. I. (2004). Reduced sensitivity to others’ fearful expressions in psychopathic individuals. Personality & Individual Differences, 37, 1111–1122.

  Blair, R. J. R., Peschardt, K. S., Budhani, S., Mitchell, D. G. V., & Pine, D. S. (2006). The development of psychopathy. Journal of Child Psychology and Psychiatry, 47, 262–276.

  Blonigen, D. M., Carlson, S. R., Krueger, R. F., & Patrick, C. J. (2003). A twin study of self-reported psychopathic personality traits. Personality and Individual Differences, 35, 179–197.

  Breiter, H. C., Etcoff, N. L., Whalen, P. J., Kennedy, W. A., Rauch, S. L., Buckner, R. L., … & Rosen, B. R. (1996). Response and habituation of the human amygdala during visual processing of facial expression. Neuron, 17(5), 875–888.

  Brennan, K. A., Clark, C. L., & Shaver, P. R. (1998). Self-report measurement of adult attachment: An integrative overview. In J. A. Simpson & W. S. Rholes (Eds.), Attachment theory and close relationships (pp. 46–76). London, UK: Guildford.

  Büchel, C., & Dolan, R. J. (2000). Classical fear conditioning in functional neuroimaging. Current Opinion in Neurobiology, 10, 219–223.

  Büchel, C., Morris, J., Dolan, R. J., & Friston, K. J. (1998). Brain systems mediating aversive conditioning: an event-related fMRI study. Neuron, 20, 947–957.

  Burke, J. D., Loeber, R., & Lahey, B. B. (2007). Adolescent conduct disorder and interpersonal callousness as predictors of psychopathy in young adults. Journal of Clinical Child and Adolescent Psychology, 36, 334–346.

  Calder, A. J. (1996). Facial emotion recognition after bilateral amygdala damage: Differentially severe impairment of fear. Cognitive Neuropsychology, 13, 699–745.

  Campbell, M. A., Porter, S., & Santor, D. (2004). Psychopathic traits in adolescent offenders: An evaluation of criminal history, clinical, and psychosocial correlates. Behavioral Sciences & the Law, 22, 23–47.

  Cleckley, H. (1941). The mask of sanity. St. Louis, MO: Mosby.

  Coid, J. (1998). The management of dangerous psychopaths in prison. In T. Milon, E. Simonson, M. Birket-Smith , & R. Davis (Eds.), Psychopathy: Antisocial, criminal, and violent behaviour (pp. 431–457). New York: Guilford Press.

  Coid, J.W., Yang, M., Ullrich, S., Roberts, A. D. L., & Hare, R. D. (2009). Prevalence and correlates of psychopathic traits in the household population of Great Britain. International Journal of Law and Psychiatry, 32, 65–73.

  Coid, J., Yang, M., Ullrich, S., Roberts, A., Moran, P., Bebbington, P., & Singleton, N. (2009). Psychopathy among prisoners in England and Wales. International Journal of Law and Psychiatry, 32, 134–141.

  Cooke, D. J., & Michie, C. (2001). Refining the construct of psychopathy: Towards a hierarchical model. Psychological Assessment, 13, 171–188.

  Cooke, D. J., Michie, C., & Hart, S. D. (2006). Facets of clinical psychopathy: Toward clearer measurement. In C. J. Patrick (Ed.), Handbook of psychopathy (pp. 91–106). New York: Guilford.

  Cooke, D. J., Michie, C., Hart, S. D., & Clark, D. A. (2004). Reconstructing psychopathy: Clarifying the significance of antisocial and socially deviant behavior in the diagnosis of psychopathic personality disorder. Journal of Personality Disorders, 18, 337–357.

  Cornell, D. G., Warren, J., Hawk, G., Stafford, E., Oram, G., & Pine, D. (1996). Psychopathy in instrumental and reactive violent offenders. Journal of Consulting and Clinical Psychology, 64, 783–790.

  Crittenden, P. M. (1988). Relationships at risk. In J. Belsky & T. Nezworski (Eds.), Clinical implications of attachment (pp. 136–174). Hillsdale, NJ: Erlbaum.

  Dadds, M. R., El Masry, Y., Wimalaweera, S., & Guastella, A. J. (2008). Reduced eye gaze explains “fear blindness” in childhood psychopathic traits. Journal of the American Academy of Child and Adolescent Psychiatry, 47, 455–463.

  Dadds, M. R., Perry, Y., Hawes, D. J., Merz, S., Riddell, A. C., Haines, D. J., & Abeygunawardane, A. I. (2006). Attention to the eyes and fear-recognition deficits in child psychopathy. The British Journal of Psychiatry, 189, 280–281.

  De Dreu, C. K., Greer, L. L., Van Kleef, G. A., Shalvi, S., & Handgraaf, M. J. (2011). Oxytocin promotes human ethnocentrism. Proceedings of the National Academy of Sciences, 108, 1262–1266.

  Deeley, Q., Daly, E., Surguladze, S., Tunstall, N., Mezey, G., Beer, D., … & Murphy, D. G. (2006). Facial emotion processing in criminal psychopathy Preliminary functional magnetic resonance imaging study. The British Journal of Psychiatry, 189, 533–539.

  Edens, J. F., Marcus, D. K., Lilienfeld, S. O., & Poythress, N. G., Jr . (2006). Psychopathic, not psychopath: taxometric evidence for the dimensional structure of psychopathy. Journal of Abnormal Psychology, 115, 131–144.

  Farrington, D. P. (2003). Key results from the first forty years of the Cambridge study in delinquent development. In T. P. Thornberry & M. D. Krohn (Eds.), Taking stock of delinquency (pp. 137–183). New York: Plenum Press.

  Fazel, S., & Danesh, J. (2002). Serious mental disorder in 23,000 prisoners: A systematic review of 62 surveys. Lancet, 359, 545–550.

  Finzi, R., Ram , A , Har-Even D., Shnitt, D., & Weizman, A. (2001) Attachment styles and aggression in physically abused and neglected children. Journal of Youth and Adolescence, 30, 769–786.

  Flor, H., Birbaumer, N., Hermann, C., Ziegler, S., & Patrick, C. J. (2002). Aversive Pavlovian conditioning in psychopaths: Peripheral and central correlates. Psychophysiology, 39, 505–518.

  Forth, A. E., & Burke, H. C. (1998). Psychopathy in adolescence: Assessment, violence, and developmental precursors. In D. J. Cooke, A. E. Forth , & R. D. Hare (Eds.), Psychopathy: Theory, research and implications for society (pp. 205–229). Boston: Kluwer.

  Forth, A. E., Kosson, D. S., & Hare, R. D. (2003). The Psychopathy Checklist: Youth Version manual (PCL-YV). Toronto, ON, Canada: Multi-Health Systems.

  Frick, P. J., Cornell, A. H., Barry, C. T. Bodin, S. D., & Dane, H. E. (2003). Callous-unemotional traits and conduct problems in the prediction of c
onduct problem severity, aggression, and self-report of delinquency. Journal of Abnormal Child Psychology, 31, 457–470.

  Frodi, A., Dernevik, M., Sepa, A., Philipson, J., & Bragesjö , M. (2001). Current attachment representations of incarcerated offenders varying in degree of psychopathy. Attachment and Human Development, 3, 269–283.

  Gao, Y., Raine, A., Venables, P. H., Dawson, M. E., & Mednick, S. A. (2010). Reduced electrodermal fear conditioning from ages 3 to 8 years is associated with aggressive behavior at age 8 years. Journal of Child Psychology and Psychiatry, 51, 550–558.

  Gillespie, S. M., Rotshtein, P., Wells, L. J., Beech, A. R., & Mitchell, I. J. (2015). Psychopathic traits are associated with reduced attention to the eyes of emotional faces among adult male non-offenders. Frontiers in Human Neuroscience, 9, 552. doi:10.3389/fnhum.2015.00552

  Gordon H. L., Baird A. A., & End A. (2004). Functional differences among those high and low on a trait measure of psychopathy. Biological Psychiatry, 56, 516–521.

  Gregory, S., Simmons, A., Kumari, V., Howard, M., Hodgins, S., & Blackwood, N. (2012). The antisocial brain: Psychopathy matters: A structural MRI investigation of antisocial male violent offenders. Archives of General Psychiatry, 69, 962–972.

  Guay, J. P., Ruscio, J., Knight, R. A., & Hare, R. D. (2007). A taxometric analysis of the latent structure of psychopathy: evidence for dimensionality. Journal of Abnormal Psychology, 116, 701–716.

  Hare, R. D., & Neumann, C. S. (2008). Psychopathy as a clinical and empirical construct. Annual Review of Clinical Psychology, 4, 217–246.