Multiple murder: theories help us explain behaviour, theories come and go; society changes, they could be ahead of time, phrenology: reading bumps on a head to determine criminality. People believed that the bumps on individual"s head determine their personality and psychological makeup. Neutralization theory: introduced by matza and sykes in 1957. Not all fibers: wayne williams: known at the atlanta child killer, condemn those who are condemning you. However, splash was heard: he matched the look of the sketch someone had drawn. Strain theory: is a sociological and criminological theory developed in, 1957 by robert k. This creates much stress for all of society and people react differently to stress. Some people exercise, etc: this could be marriage problems, work problems, etc. Serial killers try to take out their anger on their victims: some serial killers are angry at society and want to teach them a lesson, some people are born in a slum and others in a palace.