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Serial Killers: Born or Made?

Aug 28, 2025

Overview

This lecture explores the debate over whether serial killers are born or made, using case studies to examine biological and social influences.

Introduction to the Debate

  • The lecture addresses the question: Are serial killers born or made?
  • Media often portrays serial killers as inherently evil ("born"), but this view may be biased.
  • The speaker aims not to excuse crimes but to explore their origins from different angles.

Case Study: Ted Bundy ("Born" Killer)

  • Ted Bundy had a supportive family and stable upbringing with no clear traumatic events.
  • Displayed violent behavior from a young age, such as setting traps for peers.
  • No evidence from interviews suggests environmental causes; supports the "born" perspective.
  • Bundy confessed to 28 murders, with an estimated kill count up to 100.

Case Study: Richard Ramirez ("Made" Killer)

  • Richard Ramirez suffered extreme abuse from his father and witnessed traumatic violence.
  • Suffered a childhood accident leading to temporal lobe epilepsy and social isolation.
  • Influenced by a criminally violent cousin, exposed to graphic violence at age 13.
  • Experienced hallucinations and felt driven by "voices" he associated with Satan.
  • Ramirez’s violence is linked to trauma, abuse, and neurological injury, supporting the "made" argument.

Complexity and Middle Ground

  • Evidence from both cases suggests serial killers may be born, made, or influenced by both factors.
  • John Wayne Gacy is an example of overlapping causes (abuse plus socioeconomic privilege).
  • The debate is not mutually exclusive; both nature (biology) and nurture (environment) play roles.

Key Terms & Definitions

  • Serial Killer — A person who commits multiple murders, typically with psychological motives and a distinct pattern.
  • Nature vs. Nurture — The debate over whether genetics ("nature") or environment ("nurture") shapes behavior.
  • Temporal Lobe Epilepsy — A neurological disorder that may influence behavior due to seizures in the temporal lobe.

Action Items / Next Steps

  • Reflect on the complexities of criminal behavior and avoid oversimplified explanations.
  • Consider additional case studies or research for a broader understanding of the nature vs. nurture debate.