An assault is either a threat of attack backed up by the ability to follow through with the attack or a physical or verbal attack. Perhaps no crime is more associated with alcohol than assault. Alcohol increases anger levels and irritability, making it more likely that individuals will want to commit violence against someone else. Alcohol also reduces impulse control, making it more likely that an intoxicated individual will follow through. Studies have shown that between 25 and 50% of assaults involve alcohol.