Jeffrey Dahmer’s Brain: Inside the Mind of a Serial Killer

Decades after the grisly murders, what can neuroscience reveal about evil and the nature of free will?

Carlyn Beccia
The Grim Historian
Published in
7 min readOct 18, 2022

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Jeffrey Dahmer’s brain: What can neuroscience reveal about the mind of a serial killer
Pexels | Photo by Anna Shvets

In 1995, serial killer Jeffrey Dahmer was on trial. Or at least his brain was. This trial was not to convict Dahmer of murdering and cannibalizing 17 mostly young Black men.

This trial would decide whether Dahmer’s brain should be donated to science or cremated.

His mom Joyce Dahmer (Flint) wanted answers. Joyce requested that scientists study her son’s brain to determine if biological factors caused his violence.

His dad Lionel Dahmer wanted closure. Lionel wanted his son’s brain cremated and to put the saga behind him.

On December 13, 1995, a judge ordered Dahmer’s brain cremated, forever preventing scientists from revealing its secrets. But decades later, neuroscientists have studied the criminal mind and found commonalities.

This is your brain on murder

In 2019, University of Chicago neuroscientists scanned the brains of 800 violent criminals to answer one pivotal question — is a killer’s brain different from other brains?

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Carlyn Beccia
The Grim Historian

Author & illustrator. My latest books — 10 AT 10, MONSTROUS: THE LORE, GORE, & SCIENCE, and THEY LOST THEIR HEADS. Contact: CarlynBeccia.com