Alcohol and Its Effects On Humans Does alcohol have any effect on human aggression? Americans are very concerned today over violent crime. This is probably because the US violent crime rate has been increasing. A violent crime occurs every sixteen seconds in the U.S. (Adler 1994). According to Pernanen (1991), studies already show that over 50% of the assailants were intoxicated at the time the violent crime was committed. To see if alcohol has any relation to aggression, experiments were performed on a group of people. In the balance placebo design, half of the participants are told they will rece