4 years ago

Lockdown Special: MacDonald Triad

A special lockdown bonus with Kayla and special guest, her sister Alexis. We discuss the mystical MacDonald Triad, which many purport to be a predictor of violence, especially with serial killers. But is it accurate? Get your pitchforks out.

And stay healthy, please.

Sources:

Grafman, J., Schwab, K., Warden, D., Pridgen, A., Brown, H. R., & Salazar, A. M. (1996). Frontal Lobe Injuries, Violence, and Aggression: A Report of the Vietnam Head Injury Study. Neurology, 46(5), 1231–1231. https://doi.org/10.1212/WNL.46.5.1231
Leary, T., Southard, L., Hill, J., & Ashman, J. (2017). The Macdonald Triad Revisited: An Empirical Assessment of Relationships between Triadic Elements and Parental Abuse in Serial Killers. North American Journal of Psychology, 19(3), 627.
Macdonald, J. M. (1963). The threat to kill. American Journal of Psychiatry, 120(2), 125–130. https://doi.org/10.1176/ajp.120.2.125
Parfitt, C. H., & Alleyne, E. (2018). Not the sum of its parts: A critical review of the macdonald triad. Trauma, Violence, & Abuse, 1524838018764164. https://doi.org/10.1177/1524838018764164 Ramsland, K. (2012). Triad of Evil. Psychology Today. http://www.psychologytoday.com/blog/shadow-boxing/201203/triad-evil
Yarnell, H. (1940). Firesetting in children. American Journal of Orthopsychiatry, 10(2), 272–286. https://doi.org/10.1111/j.1939-0025.1940.tb05690.x