Free will · Quiz question 16/35

The Tumor and the Upbringing

Manipulation, Brain Tumors and Bad Upbringing

One person turned violent because of a brain tumor, another because of an abusive childhood. Is their responsibility different? The manipulation argument and free will skepticism.

As it appears in the quiz

A became violent because of a brain tumor. B became violent because of an abusive childhood. Neither chose the cause.

When it comes to responsibility, A and B aren't fundamentally different.

Who came up with it

This question has the same structure as Derk Pereboom's "four-case argument." He lines up a person directly manipulated by neuroscientists (1), one programmed from birth (2), one shaped by upbringing (3), and an ordinary person in a deterministic world (4). If case 1 isn't responsible and there's no relevant difference between the cases, then case 4 isn't either. Gary Watson used the case of murderer Robert Harris, who had a brutal childhood, to show how upbringing shakes our urge to blame.

Original papers & key readings

What it's really asking

Intuitively we forgive the tumor patient but blame the person with a rough past. This question asks whether that difference holds up. If neither chose the cause, blaming only one looks inconsistent.

Compatibilists look for a difference: a tumor wrecks your ability to respond to reasons, while a harsh upbringing shapes your values but leaves that ability intact. Skeptics like Pereboom say differences like that can't produce ultimate responsibility. He argues we can drop blame and still justify protecting society — say, by isolating someone dangerous, like a quarantine.

Where philosophers stand

Free will skepticism (agrees)

Neither chose the cause, so they're alike. We should respond with prevention and rehabilitation, not deserved blame.

Key names: Pereboom, Galen Strawson, Caruso

Reasons-responsive compatibilism (disagrees)

A tumor takes away rational control; a bad upbringing doesn't necessarily. Different abilities, different responsibility.

Key names: Fischer & Ravizza, Daniel Dennett

History-sensitive views

How your values were formed matters. Manipulation cancels responsibility; ordinary upbringing doesn't.

Key names: Alfred Mele

Philosophers to check out

Sources