Although, many serial killers experience abuse, neglect, or trauma and their formative years some do not like serial killer William Heirens. William had a relatively normal childhood (Berry-Dee, 2011). The only difficulties in his childhood that he could remember was his parents fighting over money but since this was during the Great Depression this was also relatively normal. Serial killer John Cannon also …show more content…
Studies have shown that this abuse and childhood traumas show up in many ways throughout the childhood and adolescence (Leary et al., 2017). According to the MacDonald Triad, there are certain behaviors that suggest there is some sort of abuse or trauma going on in the home. These behaviors include bedwetting after the age of five, fire setting, and animal cruelty (Leary et al., 2017). It is also said that these behaviors may be able to predict violent and antisocial behavior. These abused and traumatized children will often suppress their emotions disassociating themselves from their family and friends. Therefore, they will turn to other ways to get the contact they need (Allely, Minnis, Thompson, Wilson, & Gillberg, …show more content…
For normal people, there are 46 chromosomes with either an XY or XX for male or female (Ioana, 2013). One of these genes that predisposes people to criminal behavior is an anomaly in the sex chromosomes making the person have an extra X chromosome leading the person to have 47 chromosomes with xxy this anomaly is referred to as Klinefelter's syndrome (Ioana, 2013). Research has established that Klinefelter syndrome is present among criminals five to ten times more than the general population. There is also another anomaly in the sex chromosomes that lead to a person to have 47 chromosomes with a xyy which is known as the crime chromosome (Ioana, 2013). With this chromosome, the frequency among criminals is 10 times higher than the general population. The appearance of this crime chromosome is commonly associated with acts of violence, serial killers, and a general disposition towards murder (Ioana,