| Description | Researcher | Date |
|---|
| 34% of adult male suspects awaiting interview have an IQ of less than 70. | |
| 31 persistent male offenders (13-17 years old) with 4+ offences that would've warranted custodial sentence in adults. Most prominent diagnosis = CD, ADHD and drug abuse. | |
| Conduct Disorder (CD) is a percursor for future offending but these behaviours were unrelated to school performance. | |
| ASDP and anxiety/mood disorders result in increases in violence. | |
| Impairments in aversive conditioning found in psychopaths. They don't learn quickly from consequences. | |
| Psychopathy has been linked with increases in reactive and instrumental aggression, which is linked to the amygdala, hypothalamus and peri-aqueductal gray. | |
| 231 offenders in a 3 year follow up study. 80% of psychopaths had reoffended compared to 25% of non-psychopaths. | |
| Genetic factors are important in the association between psychopathic personality and antisocial behaviour. | |
| Prevalence of IDs in 12,000 prisoners - systematic review of 10 studies from different countries. Prevalence rates of IDs = 0.5-1.5%. 3% of those who committed suicide in prison ha | |
| The Original Psychopathy Checklist | |
| 35 male offenders convicted of homicide. 14 psychopaths, 21 non-psychopaths. 15 year follow up, 11 of the psychopaths had reconvicted compared to 6 of the non-psychopaths. No sig. | |
| Twin study on psychopathy. 353 male twins - moderate heritability. | |
| Recidivism in offenders with low IQ us higher. | |
| 299 offenders in a 3 year follow up - 65% psychopath reoffending compared to 25% non-psychopath. | |
| Psychopaths struggle to recognise fear, but can recognise other emotions. | |
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