Zodiac Killer Case Analysis | Mental Health & Personality

This video answers the questions: Can I analyze the Zodiac Killer case? What are the mental health and personality factors at work in this case?

American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). Arlington, VA: Author.

Antisocial Personality Disorder

1. Repeated unlawful behaviors
2. Consistent deceitfulness
3. Impulsivity, poor planning
4. Aggressiveness, physical fights
5. Reckless disregard for safety
6. Consistent irresponsibility
7. Lack of remorse

[kellyteacherforlife]

"He didn't have any respect for the rules of grammar!!!" As an English teacher I cracked up. Priceless Dr. Grande. Priceless.

[albert_lucientes]

Dr Grande has such a relaxing voice, even while he talks about the most horrific cases.

[DreamingInTechnicolor]

6:36 *...”Here we see our first look at the Zodiac Killer’s ability to murder grammar...  that's what he did in the letters that he wrote. He didn't have any respect for the rules of grammar.”*  OUCH, this statement alone makes me want to repent for living a life rife with grammatical errors. 🥺

[stranglewankhitman]

I love how Dr Grande talks about these serial killers' personalities and exposes their vulnerabilities and their real personalities. Too many of those creeps build a cult of personality around themselves and manipulate people, or think they have some kind of a "legacy", and the good doctor just cuts right through all of that bullshit and calls them what they are.

[thiscorrosion]

I think this guy's main motive was more about power and control, and outsmarting everyone.There's almost never just one motive.

[colleenharding]

I think it would have made him mad that those two, average, every day, normal schoolteachers solved his cipher in only two days. As a result, I believe his next ciphers were made of nonsense characters. They were never solved, because they cannot be solved. Psychologically, this would help him restore his wounded ego, and add to the public's intrigue. He wanted everyone trying desperately to solve the ciphers. He wants to be seen as mysterious and brilliant

[McNIMs]

Dr. Grande slips wry humor in with no effort at all, love it

[Lazrs]

I really enjoy when you go over the crime history AND the psychology rather than only the psychology. Adds great context to your explanations and it’s way more entertaining

[SHurd-rcgo]

I was a homemaker/mom in the Bay Area during that unforgettable time. Thank you, Dr Grande, for all your hard work. Please stay well.

[thiscorrosion]

Sadly, after reading tons about this case over the years, my conclusion is that the police are never really as smart as they want you to believe they are. The FBI have brilliant people, no doubt,
but they are rarely involved early on in cases like this, or at least, years ago they weren't when it counted, which is tragic.

[MasterMalrubius]

The use of radians is a SIN of an attempt to seem intelligent COS he did not implement any further use of trigonometry. He just wanted to confuse the police by sending them off on a TANGENT.

[janelleyharris]

This video creeped me out at the end.... The guy was never caught, he's likely dead now, many people think they know who he is, but an eternal mystery.... I don't like that, unsolved mysteries bother me

[elisionite]

I really like how you list out the events chronologically - it's all very clear and concise - without much deviation or speculation. I find a lot of other true crime analysis tends to lead the audience towards a particular conclusion; I much prefer your format.
Keep up the great work!

[kellyfelly]

I found your analysis very interesting. I'm watching some of your older videos. This one popes up so I clicked on it. So glad I did.
Very interesting. It is frightening that so many people thought they were related to
the zodiac killer. That is just plain scary!
Thank you Dr Grande.

[berelinde]

I realize that this is an older video and that you will probably not see this, but I am really enjoying your criminal profile videos. I hope that you continue to make them.

[mikemck]

I have a possible theory on the “bad grammar” component. As a child in grade school I was hospitalized for behavioral issues. This was at a time when I would have been taught hand writing, and grammar. That was likely the a cause in me having bad spelling/grammar. In the hospital, the school work was mostly math based, and I wound up excelling there. So much so, later on I was moved up grades, and graduated HS two years early. My writing skills are not terrible by average standards, but are when compared to any of my other academic skills. Plus, I have spell check.

[teresahowick]

I have no idea how I found you but I’m so glad I did. All your videos are fascinating and I only trust you and Stephanie Harlowe to truly look at things objectively and give every topic fair analysis. Thank you

[Aspenbeveridge]

I’m hooked. Can’t stop watching your vids, Doc! Thanks for the informative and interesting episodes.

[jfrsnjhnsn]

25:18 This is the scariest thing about reading Robert Graysmith's book. We meet suspect after suspect that are horrible, dangerous people and each one in turn definitely seems to be a match, but then something proves that it's not them, and the takeaway is that killers just like the Zodiac are everywhere. It would have been nice to catch him, but it would also have only been a drop in the bucket.

[michaelgarza]

There’s no you tuber I can listen to talk for 20 minutes straight. Keep up the great content