I Created Three Photorealistic Photos Of The Zodiac Killer Using Eyewitness Testimony And Police Sketches.

The Zodiac Killer: A Jungian and Typological Analysis #1

Introduction to The Zodiac Killer

The Zodiac Killer was a Californian serial killer who took the lives of a confirmed five victims and a speculated seven to thirty-seven victims from December 20th, 1968 to October 11th, 1969. To this day he remains unidentified.

Murder (December 20th, 1968 - Lake Herman Road): David Arthur Faraday and Betty Lou Jensen are both shot at 10:15pm. 

Murder (July 4th, 1969 - Blue Rock Springs Park Grounds): Darlene Ferrin and Michael Mageau are both shot with a 9mm luger. Mageau survives and later recalls the suspect as a short, heavyset male with short brownish-blonde hair and a round face.

Event (August 1st, 1969): The killer, now operating under the name “The Zodiac”, sends three letters written in code to the Vallejo Times, San Francisco Chronicle and the San Francisco Examiner. 

Murder (September 27, 1969 - Lake Berryessa): Bryan Hartnell and Cecelia Shepard are approached by The Zodiac who binds them with fishing line under the false pretense he was a recently escaped prison convict. Bryan Hartnell and Cecelia Shepard are then promptly stabbed a total of sixteen times before the perpetrator vanishes. Hartnell survives and later recalls the suspect as a heavyset man clad in a black, executioner style hood and cross-hair symbol drawn on his torso with greasy brown hair.

Murder (October 11th, 1969 - Geary Street): At 9:35 The Zodiac enters the cab of Paul Stine, directing him to drop him off at Cherry Street. At 9:55pm Paul Stine is shot and killed by Zodiac; at the same time the murder is witnessed by three teenagers. The teenagers and other witnesses later recall the suspect as a 35-45 year old male with reddish-brown crew-cut hair, a medium to heavy-build and who was wearing heavy rim glasses. This description is used as the basis for the police sketch.

Event (October 14th, 1969): Another letter is received by the Zodiac containing a portion of Paul Stine’s shirt and multiple threats.

Aftermath: More letters by The Zodiac were received by newspapers, most prominently the chronicle. Notable highlights of these letters include The Zodiac claiming to have taken the lives of up to 37 victims, a letter that supposedly had his name coded into it, a plan to use a technically plausible bomb, a letter claiming the murder of one Sgt. Radetich, a letter written entirely in cypher stating he believed his victims will work as his slaves in the afterlife, a custom made halloween card meant to be received by reporter Paul Avery and a letter that alluded to the idea he was the kidnapper of Kathleen Johns thus giving credence to the Lawrence Kane hypothesis. The Zodiac Killer has also been the main suspect in multiple other cases, such as Betsy Aardsma case where a college-aged girl was murdered by a stab wound to the torso.

Typological Analysis

Serial killers can usually be organized into six typologies each with their own unique incentive, ideas, thoughts and methods of killing. These types are the organized killer, the disorganized killer, the visionary killer, the mission-oriented killer, the hedonistic killer and the power-oriented killer. 

Typology of the Zodiac Killer

The Zodiac Killer is an example of a mixture between two types, mainly a visionary and hedonistic (thrill variety) killer. The visionary killer is driven not usually by thrill or enjoyment but rather by a break from reality. In some cases, this type of killer shows the unique trait of remorse. On the other hand, the hedonistic thrill killer is driven by the thrill of murder, this type is similar to the power-oriented killer as they both commit murder out of enjoyment, however, the hedonistic killer does not derive gratification from dominating the victim.

An example of his visionary side was displayed in one of his many letters sent to the San Francisco Chronicle where he gloated that he wasn’t afraid of the gas chamber as his murders have already secured him enough slaves for paradise. From this we can assume his dominant incentive for killing was the belief that he needs a certain amount of servants for the afterlife. However, his hedonistic thrill seeker side is usually what is focused on when psychologists or people interested in the case first point out when discussing his psychology. For example, in The Vallejo Times letter he stated that killing was the most thrilling experience and was, “better than getting your rocks off with a girl”, though reasserted his belief in paradise afterward. An interesting thing to note is the Zodiac’s connection between sex and murder.

The organized vs. disorganized concept is another system of criminal typology that uses crime scene analysis. Using this system we can use conjecture to determine certain personality traits (organized killers might have a higher IQ, for example). I’ll use this rating system to figure out his orientation on the O/U scale:

-Restraints: 1

-Victim known: 0

-Stranger targeted: 1

-Poisoned: 0 

-Chaotic scene: 1

-Controlled scene: 0 

-Weapon planned: 1 

-Weapon left: 0

-Body transported: 0

-Act focused: 0

From this ranking we can determine that the Zodiac Killer was directly in between a disorganized and organized killer. However, he matches 5/11 descriptor of a disorganized killer (minimal conversation, sloppy crime scene, minimal use of restraints, body left at crime scene, body left in open) and only 4/11 descriptors of the organized variety (planned offense, victim a stranger, aggressive acts prior to death, absent weapon).

For personality factors we can use the OCEAN model:

-Openness: High. Inquisitive and creative. Created his own suit, strapped a flashlight to his gun and sent coded letters.

-Consciousness: Low. Disorganized and spontaneous. Left victims alive, allowed his face to be seen multiple times and didn’t hide victims.

-Extraversion: Unknown. Likely low. Introversion is associated with disorganized killers.

-Agreeableness: Low. Uncooperative and hostile. Crime behavior and taunted police.

-Neuroticism: Mid to low. Moderately emotional and anxious. Was possibly anxious during the course of the Mageau attack, however was perceived as calm and monotone in other murders. 

Speculation, Comparisons to Other Killers, Psychological Profiles

We know that the Zodiac Killer could be profiled into both the visionary and hedonistic category based off motivation. However, what could possibly be the cause for these behaviors and what could be gleamed from these classifications? A good method for this type of speculation is by comparing him to other serial killers with similarities in already established psychology. So here are some related speculations. 

-It’s possible that the Zodiac Killer gleamed sexual gratification from murder. Yang Xinhai, another hedonistic killer, stated he felt sexual satisfaction after killing his victims. It’s possible his specific type of victim (teenage couples) gave him the most satisfaction.

-When considering the fact he didn’t assault the victims afterward, his teasing of the police and creation of different methods of murder it could be assumed the Zodiac Killer enjoyed not killing on its own but rather the game of murder. He could’ve been hedonistic in the sense he gleamed pleasure from committing a murder, perfecting it and then getting away with it while receiving ludicrous amounts of media attention.

-It’s possible the Zodiac Killer has some form of schizophrenia, psychosis or a Cluster A personality disorder. David “Son of Hope” Berkowitz was strikingly similar to the Zodiac. Berkowitz and the Zodiac both killed couples, both killed their victims while they were in their cars, both sent letters taunting the police, both used guns to murder their victims, both didn’t assault their victims after and both had aspects of the visionary type. Berkowitz was diagnosed with paranoid schizophrenia. Berkowitz also gained sexual gratification from the murders, supporting the previous comparison.

-The Zodiac Killer likely took great pride in his public appearance. In his letter about the attack of Michael Mageau he said that he calmly left the scene as to not attract attention to himself, despite Mageau asserting he had left quickly in a panic. At the Lake Berryessa attack the Zodiac wore a specialized suit complete with a symbol on the torso. Sure this is strange on its own but the stranger part is that there’d be no need to wear the suit if he was planning on killing both victims, which indicates that he wore it because he wanted to tailor his image to his persona. The Zodiac even admitted this himself when he complained that he didn’t believe he got as much media attention as he deserved. All of this culminates with the Zodiac’s statement saying he didn’t look like the police sketch made of him, which could be his attempt to draw the public’s attention away from who he is under the façade of the notorious, mysterious and inventive Zodiac Killer.

-Another comparison could be made to Dennis “BTK’ Radar. Radar and the Zodiac both sent letters and penned their own name. Radar was diagnosed with narcissistic personality disorder, this could very well coincide with the Zodiac’s need for admiration and recognition. 

-If he does fall in line with the “disorganized killer” typology it’s possible he did not travel far from his home to commit the crime, was secluded or asocial and generally worked in a field that didn’t require much talent.

-The female victims of the Zodiac Killer may look like a past girlfriend such as Ted Bundy or any woman associated with pain. 2/3 of his female victims were twenty-two years of age and Betty Lou Jensen and Darlene Ferrin have strikingly similar facial proportions (specifically the spacing between the nose, mouth and eyes and the size of those areas). This could also link to sexual satisfaction being taken from murder.

-He was more focused on killing women over men, evident from him failing to kill the male side of the couple in two murders. Possibly this the result of a damaged ego after rejection as if he’s trying to regain power over women. This could be a result of his introversion linked to unorganized killers. This could also possibly disprove the hedonistic killer theory in favor of the power-oriented killer theory.

From this we can assume three possible motivations: 

-Paranoid or odd beliefs

-Sexual gratification

-Misogyny 

Jungian Analysis

Carl Jung (born July 26th, 1871 - died June 6th, 1961) was an early Swiss psychoanalyst and apprentice of Freud. Many of the concepts he built upon and created are still in use today including the concepts of introversion/extraversion, archetypes, the subconscious, the unconscious and persona.

Use of Intuition 

Intuition, explained simply, is the unconscious process which allows the user to see into or perceive conditions that are not obvious through logical thought. It presents its conclusions as whole or complete in the mind of the user. It's the ability for one to perceive and expect possible motions without logical deliberation. For example, one may get a bad feeling about an apple because it subconsciously reminds them of an apple pie they hated. 

The Zodiac Killer represents the perfect picture of an extroverted intuitive killer. Instead of receding from the object to transpose his internalized view of abstracted images from the subconscious onto the environment around him, the Zodiac Killer’s intuition is in good relation to the object. He’s not oriented toward transposing his view of the abstracted image onto the object but rather interested in the object's pre-existing string of possibilities and abstracted images as if he was searching for chaos.  

We could also see use of intuition in the very concept of The Zodiac Killer. The perpetrator of these crimes comprises his self of the multiple abstracted characteristics of what the symbol of the Zodiac Killer is. He tries to inhabit a single symbol of multiple characteristics including strength, mysteriousness, intelligence, creativity, etc. Though he may or may not inhabit any of these characteristics. 

Archetypes

On the topic of personas or symbols of self, in this paragraph we’ll discuss his use of The Joker symbol. Throughout his violent escapades he takes on the form of someone rather unaffected by conventional morals, beliefs or attention to organization. He rather takes on the persona of someone humorous, who likes playing games and is free form all conventional forms of organization. It seems as if the main archetype he tries to inhabit is the Joker, even if subconsciously.

Outro

The last Zodiac Letter was received in 1974, the last murder was in 1969 and all likely suspects are now dead. Even after all that time the remaining notoriety of this case is staggering, and new suspects are still coming up today. Even more staggering yet, after all that the case is still likely to never be solved.

Sources:

https://www.researchgate.net/publication/307819660_The_Traits_and_the_Thrill_of_Serial_Killers

https://www.zodiacciphers.com/

https://en.wikipedia.org/wiki/Zodiac_Killer

https://www.history.com/this-day-in-history/son-of-sam-arrested

https://www.infjs.com/articles/jung-descriptions-of-each-dichotomy-i-e-n-s-f-t-j-p.37/

https://www.nbcnews.com/id/wbna8929452#:~:text=Serial%20killer%20personality,more%20severe%20psychopathic%20personality%20disorder.

https://www.britannica.com/biography/Carl-Jung

https://www.marshall.edu/forensics/files/Baber_Seminar2014_ODcsp.pdf

https://zodiackillerfacts.com/ https://www.zodiackiller.com/AllenFile.html

(Notice: I am not a psychologist, but just interested in criminology and versed in Jungian theory) 

Delphi Murderer: A Short Typological Analysis #3

Introduction

I've been interested in psychologically profiling the Delphi murderer for a while. However, this is a difficult undertaking considering the notable lack of crime scene description. So this is going to be a rather short analysis and highly speculative analysis without references to Jung nor personality typologies derived from witness description.

On February 13, 2017, Liberty German and Abigail Williams were visiting the train tracks on a day off school in Delphi, Indiana. During the course of their trek, Liberty German recorded a video using the camera of her phone of a suspicious man following them. The man recorded was a 5'6" to 5'10" heavyset male with reddish-brown hair. The man later had approached the two girls at which point an audio recording was taken where the suspect can supposedly be heard saying, "Hey guys... Down the hill". The bodies of the two girls were later found on February 14th. The case remains unsolved to this day.

Typological Analysis

Serial killers can usually be organized into six typologies each with their own unique incentive, ideas, thoughts and methods of killing. The varieties of these types are the organized killer and disorganized killer and the main types are the visionary killer, the mission-oriented killer, the hedonistic killer (thrill, lust and comfort) and the power-oriented killer.

Typology of the Delphi Killer

Typology of killers using the O/U dichotomy is near useless on its own, but it's all we really have in this scenario. The murderer was most likely of a disorganized variety with an unknown main type. It's unlikely this murder was pre-meditated because, considering the location of the crime, it'd be almost impossible to know when and where the victims would be alone in the days preceding the murder. Murderers who kill children are also more likely to have low scores across all areas of cognitive functioning, were less likely to pre-meditate their murder and were also more likely to have a history of mental illness. So, both the statistical analysis and specificities of the crime fit perfectly into the disorganized killer category.

Interestingly, a moment of insight on his main typology may come from an unexpected source. In Supt. Carter's message to the killer he stated, "we know this is about power to you", in reference to the killer's motivation. This suggests they know of a power-oriented typology. If he is power-oriented it suggests his victims fit a type, are strangers but were stalked beforehand. A power-oriented disorganized mix can be contradictory.

Sadly, we cannot speculate on his big five personality typology considering the lack of crime scene analysis and dialogue between the killer and others.

Speculation, Comparisons to Other Killers, Psychological Profile

Because of his disorganized typology, we can speculate he has a low IQ, has an impulsive personality, is odd and socially awkward, most likely lives near the location of the crime, is sexually incompetent, is highly introverted, made rituals of the bodies after, has father or mother's who's work was unstable, lives alone, was harshly disciplined as a child and is in an unskilled field of work.

From research on child murderers, we can speculate multiple traits of the killer. He most likely has low scores on all forms of cognitive functioning, has a history of mental illness, is aged nineteen to forty-two, has previous child sex abuse charges, partakes in unskilled work or is unemployed, he also most likely killed out of opportunity and actually lived in the area. The idea of him being a local in the area is interesting, considering many people believe he was a local of Delphi. This could mean he had excellent spatial memory or awareness.

Traits that carry across statistics:

-Low IQ

-Local

-Unskilled work or unemployed

From this we can assume he has extremely low conscientiousness.

Outro

The tragic case of Liberty German and Abigail Williams is one of frustration and unanswered questions. It's been four years and no closure have been provided to the family or the concerned public. All we can really do now is speculate and possibly bring to light who this criminal was in other ways.

Sources:

https://www.fbi.gov/wanted/seeking-info/liberty-german/@@download.pdf

https://www.researchgate.net/publication/307819660_The_Traits_and_the_Thrill_of_Serial_Killers

https://www.marshall.edu/forensics/files/Baber_Seminar2014_ODcsp.pdf

https://www.sciencedaily.com/releases/2017/04/170405144216.htm

https://journals.sagepub.com/doi/10.1177/0093854817699437

https://www.semanticscholar.org/paper/Exploring-Potential-%E2%80%98Extra-Familial%E2%80%99-Child-Homicide-Pritchard-Sayer/8352eddf79ae0f570a85d1339d96dbefc1f4a841#paper-header

https://www.ojp.gov/sites/g/files/xyckuh241/files/media/document/201316.pdf

https://www.youtube.com/watch?v=0snT740jhtw&ab_channel=WTHI-TV

https://www.youtube.com/watch?v=seWlExTA5Ns&ab_channel=ABC7Chicago

(Note: I am not a psychologist, just interested in criminology)

Alternative Account

I have an alternative blog/account titled "Beatle" for casual activities.

Neo-noir and Representative Villains

-Introduction-

The neo-noir genre encompasses stories with a diverse set of settings and characters though often utilizing common noir tropes such as femme fatales, hard-boiled detectives and a complex murder investigation. However, an often overlooked trend in the neo-noir genre is the trope of perceived villains and a character’s realization that perception itself is the actual thing terrorizing them. Usually, using definite "truths" to who the nature of the villain to vanquish the thing terrorizing them. 

-Battles Against Fate-

Sometimes this manifests as the characters themselves fighting against the theme or law of the universe. For example, No Country for Old Men explores the absurdist belief that the universe is chaos. Both Anton Chigurh and the cop chasing him search for some kind of reasoning or truth despite there being none. The villain of Anton Chigurh is only a reflection of what's really terrorizing the cop's mind, which is the fear of a new evil rising that follows chaos. This is why he searches for answers to vanquish that fear.

-Loops in Psychology-

Other times it manifests as a loop in the character's own psychology. In Memento the main character has short term memory loss which hinders his quest to avenge his murdered wife. In the end it's revealed that he killed the murderer years ago and he's purposefully forgetting and killing new people over and over again to give his life meaning. In the end the thing terrorizing him isn't the criminal who killed his wife but rather himself. Another example is in Drive where the main character is in a mental loop of believing the truth that his new girlfriend's murderous husband is the villain and he is the good guy. By the end, he realizes truth that he can never escape from the cyclical loop of isolation he is in and returns to being a criminal.

Which Zodiac Sign is Actually Most Likely to be a Serial Killer?

-Statistic-

Based on a review of 400 criminal profiles the conclusion can be reached that Scorpio is the most common star sign among serial killers, murderers, mass murderers, etc. Roughly around 10.75% of the serial killers viewed were Scorpios, followed then closely by Gemini and Capricorn. Virgo was the least likely with only 5% of the serial killers viewed being born from August 23rd to September 22nd. Interestingly, two of the serial killers viewed had the combination of a Sun in Pisces, Moon in Pisces and Ascendant in Saggitarius. This contradicts the popular belief that Sagittarius and Virgo are the most common among Serial Killers, I'd assume that this is because the most famous Serial Killers are usually either one of those signs.

This is a ranking of how common it is for a killer to be each sign:

1. Scorpio 10.75%

2. Gemini 10.25%

3. Capricorn 9.75%

4. Aries 9.25%

5. Aquarius 9.25%

6. Sagittarius 9%

7. Pisces 8.5%

8. Taurus 8.25%

9. Libra 7.75%

10. Leo 6.75%

11. Cancer 5.5%

12. Virgo 5% (Note: The number doesn't go exactly into 100% for some reason so just pretend)

(Image Cred: The Sun)

Yuka Takaoka: A Speculative and Statistical Analysis

Introduction

Yuka Takaoka, a twenty-three-year-old Japanese woman, was arrested for attempting to murder her boyfriend with a kitchen knife on May 23rd, 2019, after she was allegedly exposed to photos of him being intimate with another woman. Stating afterward, “since I loved him so much, I just couldn’t help it”.

Speculation, Comparisons to Other Killers, Statistical Traits The motivation behind Takaoka's assault remains unclear; the only motivation surrounding the "love" she felt for him. A psychological complex common in serial killers is one of gaining control via owning the corpse of the victim. Jeffery Dahmer, an American serial killer who often dismembered and tested upon his young male victims, claimed he murdered his victims due to the fact that he believed owning his victim's bodies placed him in complete control over them, thus fulfilling a sexual fetish.

Jeffrey Dahmer claimed that killing was "the least satisfactory part... No, the killing was not the objective. I just wanted to have the person under my complete control, not having to consider their wishes, being able to keep them there as long as I wanted". Takaoka shared similar sentiments, “I thought I would kill him because I thought that was how I could be with him. I thought that expressions such as ‘I like you’ and ‘I would like to be with you’ would become a reality if [we both] die" before stating "After killing [him], I, too, wanted to die”. It seems that Takaoka's sole motive wasn't necessarily the thrill of killing her boyfriend, but rather the means to an end surrounding fulfilling the gratification of a sexual and romantic fetish surrounding complete control. The victim being a romantic partner already establishes that the perpetrator most likely felt some sort of physical attraction to the victim, strengthening the hypothesis. It is possible that the obsession was further activated by the photographs taken of the victim and the anonymous woman, which struck the perpetrator's obsession with "ownership" over the victim.

When looking more specifically at statistical analyses, it seems Takaoka does not fit the stereotypical profile of a female murderer or serial killer. Though Takaoka did know her victim, both common traits in female killers, Takaoko's motivation was not material, she waited for authorities to place her into custody, the victim was not elderly nor adolescent, nor did Takaoka kill due to physical aggression from an intimate partner.

Outro

The case of Yuka Takaoka, though tragic, highlights an important point surrounding the predictable link between killing and the need for dominance. It will most likely go down in history as one of the strangest cases of attempted murder of all time.

Sources:

https://www.tokyoreporter.com/crime/yuka-takaoka-incident-gruesome-details-emerge-about-crime-of-passion/

https://www.oxygen.com/dahmer-on-dahmer-a-serial-killer-speaks/blogs/9-mind-blowing-quotes-made-by-serial-killer-jeffrey

https://www.tokyoreporter.com/crime/yuka-takaoka-incident-victim-survives-holds-no-grudge/#:~:text=%E2%80%9CI%20thought%20I%20would%20kill,a%20knife%20from%20the%20residence.

https://au.news.yahoo.com/story-behind-graphic-photo-of-beautiful-woman-covered-in-blood-092601608.html?guccounter=1&guce_referrer=aHR0cHM6Ly93d3cuZ29vZ2xlLmNvbS8&guce_referrer_sig=AQAAACIq1Ov01V9NGiTuH5OA3orzQa15-vyY5qhb02fh7Faam0E5nO3xUjQ8xxQ0fniD7MjrfNE64Ud1P-yzAtJ1xa8N08MpO94rf_y4LiJhDE1NanG-XLDTUk5Dvwm9Ncyi3K7vxaWpc0iwrUPg7aikx9xjVsaY6A9OAH80F1d4nE3S

https://dra.american.edu/islandora/object/1213capstones:214/datastream/PDF/view#:~:text=Dahmer%20initially%20tried%20to%20avoid,in%20complete%20control%20of%20them.

https://pubmed.ncbi.nlm.nih.gov/2098088/

https://www.researchgate.net/publication/289702828_A_study_of_female_serial_killers

https://www.researchgate.net/publication/272291806_Female_serial_killers_in_the_United_States_Means_Motives_and_Makings

https://www.researchgate.net/publication/6947987_Female_serial_killing_Review_and_case_report

(Note: I am not a psychologist, just interested in criminology)

Example of the Socratic Method

Socrates: Does cumming in a man's ass make you homosexual? Some dude: Yes Socrates: If that's true then does jacking off make you handsexual?

Which MBTI type is actually the most likely to be a serial killer?

-Statistic-

Based on an analysis of 150 criminal profiles on personality-database a conclusion can be reached that ISTJ is the most common type among serial killers. Roughly around 15.33% of the serial killers viewed are ISTJs and 23.33% are Si dominants (ISTJ and ISFJ). Interestingly, only 0.6% of killers are ENFJs.

This is a ranking of how common it is for a killer to be each type:

1. ISTJ 15.33%

2. ESTP 13.33%

3. ISTP 12%

4. ISFJ 8%

5. ESTJ 6.67%

6. INTP 6%

7. ISFP 6%

8. INTJ 5.33%

9. ENTJ 5.33%

10. ENTP 4.67%

11. ESFP 4%

12. ESFJ 4%

13. INFP 3.33%

14. INFJ 2.67%

15. ENFP 2.67%

16. ENFJ 0.666666666667%

-Function Breakdown-

Dom Ne - 7.34%

Dom Ni - 9%

Dom Se - 17.33%

Dom Si - 23.33%

Dom Te - 12%

Dom Ti - 18%

Dom Fe - 4.66666666667%

Dom Fi - 9.33%

-Letter Breakdown-

Extroverted: 41.34%

Introverted: 58.66%

Intuitive - 30.6666666667%

Sensing - 69.3333333333%

Thinking - 68.66%

Feeling - 31.34%

Judging - 47.9966666667%

Perceiving - 52.0033333333% (Note: for some reason the first statistic doesn't go fully into 100% so just pretend.) (Image Cred: New York Post)

@kendrixtermina Good point and something I forgot to check because I’m not smart enough to do anything you just asked. Here’s the population percentage of each MBTI type according to The Myers Briggs Foundation website compared to killers.

ISFJ (population) 13.8% - (killers) 8%

ESFJ (population) 12.3% - (killers) 4%

ISTJ (population) 11.6% - (killers) 15.33%

ISFP (population) 8.8% - (killers) 6%

ESTJ (population) 8.7% - (killers) 6.67%

ESFP (population) 8.5% - (killers) 4%

ENFP (population) 8.1% - (killers) 2.67%

ISTP (population) 5.4% - (killers) 12%

INFP (population) 4.4% - (killers) 3.33%

ESTP (population) 4.3% - (killers) 13.33%

INTP (population) 3.3% - (killers) 6%

ENTP (population) 3.2% - (killers) 4.67%

ENFJ (population) 2.5% - (killers) 0.666666666667%

INTJ (population) 2.1% - (killers) 5.33%

ENTJ (population) 1.8% - (killers) 5.33%

INFJ (population) 1.5% - (killers) 2.67%

Here’s the commonality letter wise (and yes I know functions, I’ve read both Jung and Brigg’s firsthand descriptions):

E (population) - 49.3% - (killers) 58.66%

I (population) - 50.7% - (killers) 41.34%

S (population) - 73.3% - (killers) 69.3333333333%

N (population) - 26.7% - (killers) 30.6666666667%

T (population) - 40.2% - (killers) 68.66%

F (population) - 59.8% - (killers) 31.34%

J (population) - 54.1% - (killers) 47.9966666667%

P (population) - 45.9% - (killers) 52.0033333333%

Which MBTI type is actually the most likely to be a serial killer?

-Statistic-

Based on an analysis of 150 criminal profiles on personality-database a conclusion can be reached that ISTJ is the most common type among serial killers. Roughly around 15.33% of the serial killers viewed are ISTJs and 23.33% are Si dominants (ISTJ and ISFJ). Interestingly, only 0.6% of killers are ENFJs.

This is a ranking of how common it is for a killer to be each type:

1. ISTJ 15.33%

2. ESTP 13.33%

3. ISTP 12%

4. ISFJ 8%

5. ESTJ 6.67%

6. INTP 6%

7. ISFP 6%

8. INTJ 5.33%

9. ENTJ 5.33%

10. ENTP 4.67%

11. ESFP 4%

12. ESFJ 4%

13. INFP 3.33%

14. INFJ 2.67%

15. ENFP 2.67%

16. ENFJ 0.666666666667%

-Function Breakdown-

Dom Ne - 7.34%

Dom Ni - 9%

Dom Se - 17.33%

Dom Si - 23.33%

Dom Te - 12%

Dom Ti - 18%

Dom Fe - 4.66666666667%

Dom Fi - 9.33%

-Letter Breakdown-

Extroverted: 41.34%

Introverted: 58.66%

Intuitive - 30.6666666667%

Sensing - 69.3333333333%

Thinking - 68.66%

Feeling - 31.34%

Judging - 47.9966666667%

Perceiving - 52.0033333333% (Note: for some reason the first statistic doesn't go fully into 100% so just pretend.) (Image Cred: New York Post)