The Psychopath Test: Summary & Review

the psychopath test

The Psychopath Test is an investigative analysis of the state of the mental health industry. Focusing on shortcomings and misdiagnosis, the author Jon Ronson raises important questions on whether mental-health diagnoses are true science or more error-prone personal judgments.

Bullet Summary

  • There are a lot of gray areas between sane and insane
  • Diagnoses often contain a (sizable) portion of personal opinion
  • We have too many mental disorders on record (347): not everything is a dangerous symptom that needs to be medicated

Full Summary

About The Author: Jon Ronson is a Welsh journalist and documentary filmmaker. He focuses on science topics and controversial fringe politics, and his work is characterized by an investigative and skeptical attitude.


It’s difficult to summarize The Psychopath Test because it’s the story of the author’s own research into psychopathy.
But it does not reach any conclusions or make any points based on research or on an overview of the literature.

But here are my main takeaways:

Psychiatrists Often Got it Wrong

Before the Hare Psychopathy Checklist labeling someone a psychopath or not was fully up to the medical personnel.

And they would often get it wrong.

Hospitals, for example, admitted for treatment as psychopaths several healthy individuals who only wanted to prove that the system couldn’t really tell people apart.
When the experiment was revealed, the psychiatric world was shocked.

One hospital then said to send more healthy people posing as psychopaths and they would recognize them.
They indeed recognized more than 40.
The problem was, no healthy individuals were purposefully sent.

That’s what the Hare checklist wanted to provide: a standardized way of assessing patients that would eliminate (or reduce) human judgment.
Turns out, it might have not really done it:

Psychopathy Diagnosis Is Very Personal

The author reviews a few “gray areas” cases and shows the limitation of Hare’s checklist. The Hare Psychopathy Checklist is the instrument psychologists and psychiatrists use to assess and “label” people as psychopaths or not.

It turns out, a checklist might not be such a great tool and is very prone to human judgment. And human mistakes.

There is A Psychiatric Label For Everything!

The author makes the point that we used too many drugs. Sometimes people have issues that might not necessarily be the symptoms of psychiatric issues.

But, he says, the DSM has so many entries that almost any behavior could be labeled as a mental illness.

Psychopath In Business

Jon Ronson also goes into the overlap between psychopathy and business organizations.

If I remember correctly, at one point the book either claims or suggests that “the higher you go, the more psychopaths you meet”.

The author interviews one of the most ruthless CEOs corporate America has ever seen, Albert Dunlap.
Albert Dunlap himself prided himself on having psychopath traits that helped him in business.

My Note: Not a good example, since Dunlap crashed and burned
I didn’t think that was a good example at all though, since Dunlap ended up in a big crash and burn. So if every psychopath were like Dunlap, there would be few of them as business executives.

The Psychopath Test Criticism

The book has been criticized for its lack of scientific rigor and for the sensationalism it seeks to create.

The title itself “a journey through the madness industry” is sensationalist. “Madness”? “Industry”?

Sure the title itself confirms a certain penchant for sensationalism.

Most of all, I invite you to read Bob Hare’s reply here. It’s an instructive -and even entertaining- read.
That being said, I have to add my own critique to the critique: Hare complains in his letter that his checklist is “copyrighted material”. That’s not the highest moral point a doctor has ever reached. Especially if you consider that, in this field, one should also focus on helping the society, not just lining up one’s pockets.
If Hare was about spreading knowledge, he should share his checklist for free.

the psychopath test

Real-Life Applications

Don’t Trust Diagnoses Blindly. And Don’t Trust Self-Diagnoses
Diagnoses, often, are nothing but a personal opinions that leverage experience, research, and maybe a checklist. But they still keep that personal opinion in the mix.
Watch out especially for your own self-diagnoses, as they tend to be particularly poor.


There Is Gray… But Sometimes There Is Black and White
The author quotes the book The Sociopath Next Door. However, the messages from these two books are very different.

The Sociopath Next Door makes the point that it’s sociopaths who want you to believe that everyone can do anything. And blurring the lines of “good” and “evil” only serves the sociopaths.

I side with Martha Stout here: There are evil people.
And good and evil don’t overlap nearly as frequently as romanticized novels would want you to believe (also read “Do Good and Evil Overlap“).

The Psychopath Test might as well have been called “A Random Walk in Psychopathy”.
It felt random to me, without a single threat that would unify the different parts and chapters.

No Single Message
At the end of the day, if someone were to ask me “what’s this book about”, it would take me a long-winded answer which would say a lot while at the same time saying little.
I don’t think that’s a good thing because books like this usually leave me with little takeaways.

Sensationalist, Unscientific Categorization of Psychopath
As Ronson interviews a famous financial operator, he tries to score him on the Hare checklist. But he does so in a light and shallow way.


Raises Some Good Questions
The Psychopath Test raises some very good and important questions. Such as:

  • How much can we really trust mental diagnoses?
  • How do we ensure we don’t make grave mistakes (ie.: keeping non-dangerous people locked up and setting dangerous ones free)


I didn’t really get the point that “The Psychopath Test” was trying to make.

I listened to the audiobook and I failed to understand the author’s main point and I failed to take away a main and coherent message from the book.

At the end of it, I didn’t feel I had learned too much about either sociopathy, psychopathy, or mental illnesses in general.

Except, maybe, that labeling is difficult and possibly prone to lots of mistakes.
That, by itself, might be an important takeaway, though.

I think indeed the author was trying to somewhat discredit the psychiatric profession, but he falls short in admitting that was his goal.
That is what I missed from this book: a clearer stance from the author. Even if his stance ended with an “I’m not sure”, he should have been clearer about it in my opinion.

Overall, all in all, I would say this:

If you want to understand psychopathy, this book is not for you.
If you want to read a more journalistic, captivating book on psychopathy and the issues around mental illness, then go for it.

Check out the best psychology books, the best dark triad books, or get the book on Amazon

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