One attempt to quantify behavioral drinking employed blood alcohol concentration (BAC) level, such that a 0.08 gram percent—now the legal intoxication level in all 50 states (Alcohol Policy Information System, 2007)—for a given occasion indicated binge-drinking patterns (Lange & Voas, 2000b). Another approach developed a Binge-Drinking Score from three questions of the Alcohol Use Questionnaire (Mehrabian & Russell, 1978; Townshend & Duka, 2002). This method used quantifiable assessments of drinks per hour, times drunk within the last 6 months, and percentage of time being intoxicated when drinking to calculate a summary score unrelated to the weekly consumption of alcohol (Townshend & Duka, 2005).
