Published 12:27 AM EDT Oct 21, 2014 The arrest of a man suspected of being a serial killer in Indiana is the latest in a line of notorious mass murderers in the U.S. Here is a look at ten of the most notorious serial killers in recent U.S. History: - Ted Bundy confessed to 30 killings in seven states between 1974 and 1978, but his true death toll is unknown. He was regarded as handsome and charismatic, and he preyed on young women on college campuses and elsewhere. He escaped prison in Colorado and was ultimately convicted in Florida and put to death in the electric chair. Gary Leon Ridgway, the Green River Killer, was convicted of 48 murders and later confessed to more, killing women and girls in Washington state and California in the 1980s and 1990s. He got the nickname because five victims were found in the Green River.
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Most of his victims were strangled. He was spared the death penalty in return for information and was sentenced to life without parole.
John Wayne Gacy, known as the 'killer clown,' was accused of killing at least 33 boys and young men between 1972 and 1978. Many of the victims were buried beneath his Chicago home. He was known for entertaining children dressed in a clown costume. He was executed in 1994. Dennis Rader was known as the BTK serial killer responsible for the deaths of 10 people in the Wichita area between 1974 and 1991.
He signed notes with the letters BTK, which stood for 'bind, torture, kill.' ' He was convicted in 2005 and sentenced to life in prison. Aileen Wuornos was convicted of killing six men and executed in 2002 in Florida. She had been supporting herself as a prostitute and said she had acted in self defense. David Berkowitz, 'Son of Sam' killer, terrorized New York City in 1976 and 1977 when he killed six victims and wounded seven others using a.44 caliber revolver.
He was the object of a massive manhunt and left brazen letters taunting police and promising more slayings, describing himself as 'Son of Sam.' ' He is serving life in prison. Wayne Williams was blamed for a string of Atlanta child murders in 1979-1981. He was convicted in 1982 of killing two men and sentenced to life in prison. Atlanta police later said he was responsible for at least 23 of 29 child murders in the city, but he was not charged and maintains innocence. Jeffrey Dahmer, also known as the 'Milwaukee Cannibal,' was convicted of sexually assaulting, killing, dismembering and eating some of his victims and preserving body parts. He was convicted of 15 murders and sentenced to life in prison in 1992.
He was convicted of an additional murder in Ohio. Dahmer died in prison in 1994, beaten to death by another inmate. Robert Hansen was accused of abducting, assaulting and killing at least 17 women and possibly several more in Alaska. He pleaded guilty to four murders but was linked to at least 17 and possibly more.
He was sentenced in 1983 to life in prison and died at age 75 Aug. 21, 2014, while in prison. Juan Corona was convicted of the 1971 murders of 25 itinerant laborers in California, whose bodies were found in shallow graves in fruit orchards in Sutter County, Calif. He was sentenced to life in prison. He supplied workers to ranchers as a labor contractor and maintained a bunkhouse for the laborers.
Do serial killers have an extra chromosome? There is no such thing as a “killer gene”, but research is revealing genetic tendencies towards violent behaviour.
Face of a serial killer. Photo Credit: Curtis John via Flickr BY-ND-2.0, 2009. It’s a slippery, discreet mutation, after all we don’t see entire families of serial killers Parents of children, who have grown up to be serial killers, have reported that their child was markedly different from their other non-violent siblings., an American serial killer, kidnapper and rapist, at the tender age of three slipped butcher knives under the covers of his auntie’s bed. “He just stood there are grinned” she reported as he watched on and she repeatedly cut herself trying to get up. Nine-year-old from Charlestown Massachusetts, sexually tortured seven boys at his school. Three years later he murdered a four-year-old boy, decapitating his head with a blunt kitchen knife. These gruesome and unethical crimes got me thinking about the kind of influences that trigger one to kill.
Are serial killers inherently evil, reflections of their environment or unfortunate victims of gene malfunctions? Cropped image of blood in water. Photo credit: Peter Almay via Flickr BY-NC-SA-2.0, 2009.
Nurture; b ad seeds blossom in bad environments Environment alone cannot explain deranged behaviour as too many abused and neglected children grow up to be law-abiding citizens. And, a professor of phycology conducted a in 1997, examining the behaviour of 57 pairs of identical twins, 49 pairs of fraternal twins and 90 non-twins who had all been raised in separate households.
They evaluated the extent to which heredity influences perceptions of childhood family environment using the. The study revealed a strong link between impulsivity and sensation-seeking behaviour, attributed almost entirely to genetic factors.
Both sensation-seeking traits and impulsivity have been found to be higher in drug abusers, delinquents, and serial killers. Photo credit: Frank DeFreitas via Flickr BY-NC-ND-2.0, 2012. Chromosomal abnormalities in serial killers According to, an American forensic psychologist and writer, chromosome abnormality in serial killers begins to express itself during puberty. Serial killer, has an extra X chromosome, causing him to produce excess amount of oestrogen. During puberty his breasts began to develop causing him a lot of embarrassment and anger. Bobby channelled this anger into raping over 50 women over a thirty-year time period.
His crimes escalated killing 10 women over a 10-week period in 1983. Conversely, serial killer had an extra Y chromosome, which his lawyers argued was the cause of his violent crimes. The court found that while an extra Y chromosome seems like a logical explanation for mutant-aggressive behaviour, there is not much evidence that links the X or Y chromosome to the deviant behaviour of serial killers. Gosavi Gajbe conducted a looking at the role of chromosomes in criminality. He examined the chromosomes of 140 murders and looked for any abnormalities that may have influenced them to commit their crimes.
The study revealed that there was a definite association between the both variables but he concluded that further studies needed to be completed on more recent cases before conclusions could be made. Cropped image of the inheritance of an extra chromosome.Photo Credit: Paul Studios via Flickr BY-CC-2.0, 2012. The thrill of the kill, is the nervous system to blame? Studies by Newman et al. Have revealed that the nervous system of serial killers is considerably different to an average person. Serial killers feel less fear and anxiety. A was conducted where a group of sociopaths and a group of healthy individuals were provided with four levers and were asked to identify which lever turned a light on.
One of the levers gave an electric shock. While both groups identified which lever supplied the electric shock, the sociopaths took much longer to avoid the punishment. This need for higher levels of stimulations makes psychopaths seek more dangerous situations, which had led scientist to believe that it could partly explain their thrill to kill. Nervous System. Photo Credit: Paul Walker via Flickr CC-BY-SA-2.0, 2011. Causes for killing One cannot explicitly conclude that chromosome abnormalities are the reason for why people commit such malicious crimes. Further research needs to be conducted to come to a definitive answer.
I personally think it’s a combination of genetic factors and the environment one is brought up in. However, it’s hard to believe that some people cannot be inherently evil after reading some of the gruesome acts they have committed. What do you think?
Are serial killers inherently evil, reflections of their environment, unfortunate victims of gene malfunctions or is there a more complex formula that incorporates all of the above? Thank you for taking the time to read my post. I love you last line ” Just because someone may be genetically predisposed to such behaviour, does it mean they actually fulfil that?” Research/history has shown that there are many people who have either been brought up in bad environments or who have chromosomal abnormalities who are still functioning members of society. So I guess to answer that question, currently research is suggesting that no, people who are genetically predisposed to serial killer behaviour will not necessarily commit such crimes. I think there is a lot more research to be done in this area as there are a lot of gaps in knowledge. I am so glad you enjoyed the post ?. Really interesting post.
I’m a little like @georginao. I find it really interesting reading those real life crime stuff and wondering about the psychology behind it. Immediately regretting it as I can never sleep afterwards! As much as I don’t like the idea, I’m inclined to think that some people are inherently evil, if you can have people that are inherently good. Research like this into the genetics of serial killers makes me wonder about how people with some psychological issues may be treated in the future.
Will there be ‘serial killer’ tests? Just because someone may be genetically predisposed to such behaviour, does it mean they actually fulfil that? Thank you for taking the time to read my post. There have been a lot of mixed views online debating that exact question your asking. You see there are functioning members of society who also have an extra Y or X chromosome who have no become serial killers.
Therefore, one cannot say that all people who possess this additional chromosome will kill. I think people kill for a whole number of reasons, I also think that there are varying degrees of serial killers. I think that your genes as well as your environment both play a part. Again reading some of the cases and hearing about children as young as 3 killing makes you think that perhaps they are inherently evil. Some signs to look for in a child to determine whether they may develop violent behaviour is the killing of animals.
Many studies have found a correlation between children hurting animals and developing into adults that hurt humans. In terms of preventative measures I think bringing children up in a safe, loving, alcohol and abuse free environment, where they are taught to care and be responsible for animals is a great way to try and reduce the possibility of them harming animals. But then I am no expert. What are your thoughts? I am so glad you enjoyed the read ?.
Wow, interesting read- a little creepy too haha. I found it interesting that an extra Y or X chromosome might have something to do with serial killer behaviour. Do you think it might be because of the problems associated with these chromosomes anger is creative and these behaviours are a result of that anger or is it actually much more direct than that, i.e. You have the mutation, youre prone to exhibiting this behaviour?
Strange that some started showing signs at such a young age, reminds me of the movie “we need to talk about kevin”. Do you know if there are any signs that a child could potentially develop such violent behaviour? And if so are there preventative measures? Thanks so much for taking the time to read my post. I definitely agree with you there are varying degrees of serial killers, some are definitely more evil then others. I really like your logic behind why you think they are all inherently evil as well as reflections of their environment. I wanted to add more about Klineflelter syndrome, there is plenty of research out about it, but my blog post was already exceeding 700 words.
It is very interesting though, and thank you for bringing that up, very relevant. I am so glad you enjoyed my post. I think that like all things serial killers come on a sliding scale. Some are more evil than others. But I do think they are all inherently evil, as well as a reflection of their environment.
And if you accept that some people are inherently evil, as in they cannot change who they are and this is not a result of their environment, I cannot think of a cause excepts genetics. So gene malfunctions are the same as their inherent evilness. Loved the article too. Found it very engaging. 1 thing, somehow through a haze of alcohol, I remembered something from 1st year biology. Having an XXY (+the other 44 chromosomes) karyotype is called Klinefelter syndrome, but XYY does not have a name other than XYY syndrome.