Leryn Rose-Doggett Messori, Psy.D., is a 2016 graduate of the PsyD Program in Clinical Psychology at Antioch University, Santa Barbara
From left – Stephanie Holland (Psy.D. Program Coordinator), Dr. Leryn Rose-Doggett Messori, Dr. Ron Pilato (dissertation chair), Dr. Brett Kia-Keating (dissertation committee member) at dissertation presentation on June 16, 2016.
- Ron Pilato, Psy.D., Dissertation Committee Chair
- Brett Kia-Keating, Ed.D., Dissertation Committee Member
- Maxann Shwartz, Ph.D., Dissertation Committee External Expert
This study examined the association between serial killer typologies and previously proposed etiological factors within serial killer case histories. Stratified sampling based on race and gender was used to identify thirty-six serial killers for this study. The percentage of serial killers within each race and gender category included in the study was taken from current serial killer demographic statistics between 1950 and 2010. Detailed data was gathered about each case, including past experiences and details of their crimes using publicly available primary and secondary source material. Etiological factors identified for this study include military experience, alcohol use, drug use, whether or not the subject was bullied as a child or sexually abused, whether they displayed assaultive behavior as an adolescent, whether they were physically abused by their maternal figure, and whether they had engaged in animal torture or engaged in fire setting in childhood or adolescence. The presence of these factors was coded dichotomously (present = 1; not present = 0) for each case history. Cases were then divided by inclusion in two typologies: the FBI’s organized/disorganized typology and Holmes, Holmes, and DeBurger’s intrinsic motivation typology. The etiological factors were examined for interrelatedness and prevalence in the designated serial killer typologies. Results of crosstabulations and chi-squared analysis showed that military experience was significantly associated with the organized/disorganized typology (p
Messori, Leryn R., "Frequencies Between Serial Killer Typology and Theorized Etiological Factors." (2016). Dissertations & Theses. 316.