Macdonald triad
Encyclopedia
The Macdonald triad is a set of three behavioral characteristics that are associated with sociopathic
behavior. The triad was first identified by J.M. Macdonald in "The Threat to Kill", a 1963 paper in the American Journal of Psychiatry
.
The triad links animal cruelty, obsession with fire setting
, and persistent bedwetting
past the age of five to violent behaviors, particularly homicidal behavior. Although other studies have not found statistically significant links between the triad of violence and violent offenders, many serial killers exhibited these behaviors during childhood. Contract killer Richard Kuklinski
, serial killer Jeffrey Dahmer
, serial killer Dennis Rader
, and serial killer Gary Ridgway
all engaged in acts of animal cruelty.
Further studies have suggested that these behaviors are often the product of parental neglect, cruelty or trauma, and that such events in a person's childhood can result in "homicidal proneness".
Wright and Hensley (2003) name three recurring themes throughout their research:
In a study of 45 male prison inmates who were deemed violent offenders, McClellan (2003) found that 56% admitted to having committed acts of violence against animals. It was also found that children who abused animals were more often the victims of parental abuse than children who did not abuse animals. As previously stated, animal cruelty was a way for the children to feel as if they were retaliating against those who abused, frustrated, or humiliated them.
However, Tallichet and Hensley (2004) say that some studies have shown inconsistencies while others show consistent information when dealing with animal cruelty and later violence against humans. In their study, Tallichet and Hensley did find a link between animal cruelty and violence against humans but they examined prisoners in maximum or medium security prisons. The information is useful, but at the same time, more quality information is needed to come to a concrete conclusion.
is the “unintentional bed-wetting during sleep, persistent after the age of five.” Furthermore, bed-wetting should continue twice a week for three months consecutively.
Research has found that, unlike the other two factors, enuresis (bedwetting) is not associated with sociopathic behavior. However, enuresis may be related to firesetting and animal cruelty; persistent bed-wetting beyond the age of five can be humiliating for a child, especially if he or she is belittled by a parental figure or other adult as a result. This can then cause the child to use firesetting or cruelty to animals as an outlet for his or her frustration. Enuresis is an “unconscious, involuntary, and nonviolent act and therefore linking it to violent crime is more problematic than doing so with animal cruelty or firesetting".
Psychopathy
Psychopathy is a mental disorder characterized primarily by a lack of empathy and remorse, shallow emotions, egocentricity, and deceptiveness. Psychopaths are highly prone to antisocial behavior and abusive treatment of others, and are very disproportionately responsible for violent crime...
behavior. The triad was first identified by J.M. Macdonald in "The Threat to Kill", a 1963 paper in the American Journal of Psychiatry
American Journal of Psychiatry
The American Journal of Psychiatry is a monthly peer-reviewed medical journal covering all aspects of psychiatry and the official journal of the American Psychiatric Association. The first volume was issued in 1844, at which time it was known as the American Journal of Insanity...
.
The triad links animal cruelty, obsession with fire setting
Pyromania
Pyromania in more extreme circumstances can be an impulse control disorder to deliberately start fires to relieve tension or for gratification or relief. The term pyromania comes from the Greek word πῦρ . Pyromania and pyromaniacs are distinct from arson, the pursuit of personal, monetary or...
, and persistent bedwetting
Bedwetting
Nocturnal enuresis, commonly called bedwetting, is involuntary urination while asleep after the age at which bladder control usually occurs. Nocturnal enuresis is considered primary when a child has not yet had a prolonged period of being dry...
past the age of five to violent behaviors, particularly homicidal behavior. Although other studies have not found statistically significant links between the triad of violence and violent offenders, many serial killers exhibited these behaviors during childhood. Contract killer Richard Kuklinski
Richard Kuklinski
Richard Leonard "The Iceman" Kuklinski was an American contract killer. The 6'5" , 300 pound Kuklinski worked for Newark's DeCavalcante crime family and New York City's Five Families. He claimed to have murdered over 250 men between 1948 and 1986...
, serial killer Jeffrey Dahmer
Jeffrey Dahmer
Jeffrey Lionel Dahmer was an American serial killer and sex offender. Dahmer murdered 17 men and boys between 1978 and 1991, with the majority of the murders occurring between 1987 and 1991. His murders involved rape, dismemberment, necrophilia and cannibalism...
, serial killer Dennis Rader
Dennis Rader
Dennis Lynn Rader is an American serial killer who murdered ten people in Sedgwick County , between 1974 and 1991....
, and serial killer Gary Ridgway
Gary Ridgway
Gary Leon Ridgway is an American serial killer known as the Green River Killer. He murdered numerous women in Washington during the 1980s and 1990s, earning his nickname when the first five victims were found in the Green River. He strangled them, usually with his arm but sometimes using ligatures...
all engaged in acts of animal cruelty.
Further studies have suggested that these behaviors are often the product of parental neglect, cruelty or trauma, and that such events in a person's childhood can result in "homicidal proneness".
Firesetting
In Singer and Hensley (2004), firesetting is theorized to be a less severe or first shot at releasing aggression. Extensive periods of humiliation have been found to be present in the childhoods of several adult serial killers. These repetitive episodes of humiliation can lead to feelings of frustration and anger, which need to somehow be released in order to return to a normal state of self-worth.Animal cruelty
FBI Special Agent Alan Brantly believed that some offenders kill animals as a rehearsal for killing human victims. Animal cruelty is mainly used to vent frustration and anger the same way firesetting is. Extensive amounts of humiliation were also found in the childhoods of children who engaged in acts of animal cruelty. During childhood, serial killers could not retaliate towards those who caused them humiliation, so they chose animals because they [animals] were viewed as weak and vulnerable. Future victim selection is already in the process at a young age. Studies have found that those who engaged in childhood acts of animal cruelty used the same method of killing on their human victims as they did on their animal victims.Wright and Hensley (2003) name three recurring themes throughout their research:
- As children, future serial killers use animals to vent their frustrations because the person causing them anger or humiliation was too powerful to take down
- They felt as if they regained some control and power over their lives through the torture and killing of the animals
- To gain the power and control they needed to cause pain and suffering of a weaker, more vulnerable animal – escalating to humans in the future.
In a study of 45 male prison inmates who were deemed violent offenders, McClellan (2003) found that 56% admitted to having committed acts of violence against animals. It was also found that children who abused animals were more often the victims of parental abuse than children who did not abuse animals. As previously stated, animal cruelty was a way for the children to feel as if they were retaliating against those who abused, frustrated, or humiliated them.
However, Tallichet and Hensley (2004) say that some studies have shown inconsistencies while others show consistent information when dealing with animal cruelty and later violence against humans. In their study, Tallichet and Hensley did find a link between animal cruelty and violence against humans but they examined prisoners in maximum or medium security prisons. The information is useful, but at the same time, more quality information is needed to come to a concrete conclusion.
Enuresis
EnuresisEnuresis
Enuresis refers to an inability to control urination. Use of the term is usually limited to describing individuals old enough to be expected to exercise such control.Types of enuresis include:* Nocturnal enuresis* Diurnal enuresis...
is the “unintentional bed-wetting during sleep, persistent after the age of five.” Furthermore, bed-wetting should continue twice a week for three months consecutively.
Research has found that, unlike the other two factors, enuresis (bedwetting) is not associated with sociopathic behavior. However, enuresis may be related to firesetting and animal cruelty; persistent bed-wetting beyond the age of five can be humiliating for a child, especially if he or she is belittled by a parental figure or other adult as a result. This can then cause the child to use firesetting or cruelty to animals as an outlet for his or her frustration. Enuresis is an “unconscious, involuntary, and nonviolent act and therefore linking it to violent crime is more problematic than doing so with animal cruelty or firesetting".