What causes someone to be a murderer

Serotonin is a neurotransmitter in the brain that affects mood, which in turn can affect criminal behavior.Of those, 62.5 percent noted that the person had been increasingly angry leading up to the attack.Adequate funding for severe mental illness won't end mass murders, but it will prevent some, and it is also the cost.Testosterone, the male hormone, is linked to levels of aggression.It's a gross oversimplification to suggest a traumatic childhood is the chief contributing factor to a serial killer's behavior, but there does appear to be a strong correlation.The murderer wants to collect life insurance money or an inheritance from the victim.

The underlying reasons for the murders usually deal with family matters, business jealousy, deceit, and property matters, among others.There are different types of violent offenders and their actions can lead to murder..The murderer kills the victim in order to steal from them.War is the most common reason people commit murder.We now have a far more.I examine three famous killers to help me understand this: