The Zodiac Killer Case Study

1751 Words4 Pages

The Zodiac Killer: A Scientific Case Study
Alyshah Dhanji
Seneca College

Instructor: Ginette Boudreau
Date: November 13, 2017
Course: LSO802 The Zodiac Killer: A Scientific Case Study
One of America’s infamous serial killers, The Zodiac Killer, also known as Zodiac, murdered victims in Northern California in the late 1960s and early 1970s. Till this day, the identity of the Zodiac Killer remains unknown and the case is still open with the San Francisco Police Department, in the city of Vallejo, Napa County and Solano County. This notorious killer took pride in taunting law enforcement with coded messages that remain unsolved until today.
According to Butterfield (2017), the Zodiac Killer’s timeline of murders started on October …show more content…

These factors are categorized into biological factors, psychological factors and psychosocial factors. Firstly, biological factors involve one’s genes, nervous system and endocrine system. Since the Zodiac Killer was never caught, it is unknown at this point how his genetic material could be related to his criminal behaviour. We cannot be certain if any of this family members had psychological disorders, or if he inherited any genes for antisocial personality traits. Secondly, psychological factors include the gender and sexuality of the criminal, their cognition, their motivations and emotions and their moral thinking and personality. From the facts the police do have, the Zodiac Killer was a Caucasian male, which fits the majority of statistics according to the Radford University/FGCU Serial Killer Database (2016). It can also be concluded that perhaps the Zodiac Killer lacked intimate relationships of his own and therefore mostly targeted young couples who were in love. In both cases where young couples were attacked, the women both died, however the men survived. The Zodiac Killer also showed high levels of intelligence as no one could solve the ciphers he sent in to the local newspapers. These coded messages motivated him to continue killing as he was able to taunt the police with another “win”. Lastly, psychosocial factors touch on family and peers, psychosocial …show more content…

G. (2016, September 4). Serial killer statistics. Retrieved November 11, 2017, from http://maamodt.asp.radford.edu/serial killer information center/project description.htm American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (DSM-5®). American Psychiatric Pub.
Biography.com Editors. (2017, November 09). Zodiac Killer Biography.com. The Biography.com website. Retrieved November 11, 2017, from https://www.biography.com/people/zodiac-killer-236027
Bonn, S. A. (2015, September 21). The Zodiac and Other Thrill Killers. Retrieved November 11, 2017, from https://www.psychologytoday.com/blog/wicked-deeds/201509/the-zodiac-and-other-thrill-killers
Butterfield, M. (2017, November 08). The Zodiac Killer: A Timeline. Retrieved November 11, 2017, from http://www.history.com/news/the-zodiac-killer-a-timeline
Cleckley, H. (1976). The mask of sanity: An attempt to clarify some issues about the so-called psychopathic personality. St. Louis, MO: Mosby. Inc. (Original work published 1941).
Hare, Robert. D. (1993). Without conscience: The disturbing world of the psychopaths among us. Guilford Press.
McCrary, G. (2007). Profile of the Zodiac Killer, Retrieved November 11, 2017, from

Open Document