over the years, psychologists have studied and spotted a few patterns that present in most kids that grow up to be murderers.
child abuse: although not a direct link to a future in crime, experiencing emotional or physical abuse during childhood is definitely a factor in many serial killers’ backgrounds.
family relationships: another detail many serial killers share in common is the presence of a very strict - or maybe even an overtly religious - parent. an absent father, a domineering mother, or a lack of biological parents at all are also common.
fantasy: serial killers usually spending much of their childhood in fantasy. isolation as a result of bad family relationships and a lack of social skills may result in a child withdrawing and spending an unhealthy amount of time fantasizing.
animal cruelty: this is definitely a telltale sign of danger to come. torturing or patronizing animals is seen as practice until a child is big enough or brave enough to begin to kill humans.
pyromania: setting fires is often sexually stimulating to future serial killers. the destruction of property feeds the same perverse need to destroy another human being.