CJ416 Task 2: The Macdonald Triad, a Predictor?

Robert Bricker - G00013999

Grantham College or university

The Macdonald Triad theory has been around for several years and have been studied and re-studied a lot of over the years. J. M. Macdonald, in his 1963 paper, " The Risk to Kill”, noted that particular behaviors had been more prevalent inside the violent offenders he was studying (Ramsland, 2012). He found that among the list of 100 psychotic and nonpsychotic patients he interviewed that there was a pattern in their behaviors. One thing to keep in mind is the fact while Macdonald noted these kinds of behaviors this individual did not discover much benefit in these people as a predictor. Shorty following Macdonald's findings a group found that there may be value in creating their particular study. They used 84 jailed offenders of differing aggressiveness and found that three quarters had 1 or 2 of the manners and that forty-five percent got them all (Brice, 2012). This study was poorly performed, but in later trials identical numbers had been shown within their findings. The idea became even more prominent in the 1980's and 1990's when the FBI started doing their particular studies. Their particular studies had even fewer participants than Macdonald's original study; the FBI simply used thirty eight murderers, 25 of which were serial criminals, and no non-violent criminals since controls. In spite of this small amount of data hypotheses were produced and articles or blog posts published. They did, however , then add subject history data that may provide additional clues to predictors. They will found the majority of, three quarts, had sole and/or unsociable parents growing up, 3/4 had atypical sexual desires, and that three quarters had been abused (Brice, 2012). The Macdonald triad by itself consists of the following three parts, enuresis, dog cruelty, and fire-setting. Enuresis, or prolonged bed wetting that happens after the age of five, can be brought on by maltreatment, emotional, physical, or sexual. This...

Recommendations: Brice, Meters. (Oct 2012). The Macdonald Triad: Carry out Three Common Childhood Behaviours Predict a

Serial Killer? Medical Daily. Retrieved from http://www.medicaldaily.com/macdonald-triad-do-three-common-childhood-behaviors-predict-serial-killer-243106

Hickey, Electronic. W. (2010). Serial Criminals and Their Victims. Belmont, CA: Wadsworth

Ramsland, K. (Mar, 2012). Triad of Nasty. Psychology Today. Retrieved coming from



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