The Michael Shermer Show

The Serial Killer Era of the 70s/80s: Lore, Patterns, and Plausible Explanations

Oct 15, 2025
Pulitzer Prize-winning author Caroline Fraser delves into the chilling world of serial killers like Ted Bundy and Charles Manson, exploring how environmental factors, such as toxins from pollution, might have sparked a surge in violent crime during the 70s and 80s. She discusses the role of neurological and social influences, as well as historical data limitations, in understanding these criminals. Fraser also raises thought-provoking points about the nature of psychopathy and its presence beyond crime, from corporate leaders to AI technology.
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INSIGHT

Sexual Motivation Over Instrumental Motive

  • Many serial killers derive their crimes from sexual gratification and necrophilia rather than instrumental motives.
  • Caroline Fraser argues this suggests neurological or developmental brain issues behind extreme sexual violence.
INSIGHT

Lead As A Contributing Neurotoxin

  • Fraser links postwar environmental toxins like lead to impaired brain development and increased aggression.
  • She treats lead as one of multiple biological and social contributors to violent behavior.
ADVICE

Eliminate Lead Exposure Now

  • Reduce environmental lead exposure because it harms neurological development and increases risk factors for disease and violence.
  • Fraser urges public awareness of lead's broad harms beyond crime statistics.
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