title: Big drinkers: how BMI, gender and rules of thumb influence the free pouring of wine.
abstract: BACKGROUND
  This research examines free pouring behavior and provides an account of how Body Mass Index (BMI) and gender might lead to the overpouring, and consequently the overconsumption of wine.
  
  
  METHODS
  An observational study with young adults investigated how BMI and gender affect free-pouring of wine over a variety of pouring scenarios, and how rules-of-thumb in pouring affect the quantities of alcohol poured by men and women across BMI categories.
  
  
  RESULTS
  For men, the amount poured was positively related to BMI. However, BMI did not affect pours by women. The use of the "half glass" rule-of-thumb in pouring reduced the volume of wine poured by over 20% for both men and women. Importantly, this rule-of-thumb substantially attenuated the pours by men at high BMI levels.
  
  
  CONCLUSIONS
  Increasing awareness of pouring biases represents an early and effective step toward curbing alcohol consumption among men, and especially those who are overweight. Additionally, using a simple "half glass" rule-of-thumb may be an effective way to curb overpouring, despite non-standard glass sizes.
authors.affiliation: Department of Marketing, College of Business at Iowa State University, 3250 Gerdin Building, Ames, IA 50011, United States. Electronic address: smarand@iastate.edu.
authors.forename: Laura
authors.initials: L
authors.lastname: Smarandescu
authors.affiliation: Department of Marketing, College of Business at Iowa State University, 3250 Gerdin Building, Ames, IA 50011, United States.
authors.forename: Doug
authors.initials: D
authors.lastname: Walker
authors.affiliation: Department of Applied Economics and Management, Cornell Food and Brand Lab at Cornell University, 15 Warren Hall, Ithaca, NY 14853, United States.
authors.forename: Brian
authors.initials: B
authors.lastname: Wansink
mesh_terms: D000328:Adult; D000428:Alcohol Drinking / Q000523:psychology*; D015992:Body Mass Index; D005260:Female; D006801:Humans; D008297:Male; D012727:Sex Characteristics; D012927:Social Control, Informal; D014920:Wine; D055815:Young Adult
keywords: Alcohol pouring; BMI; Drinking norms; Gender; Rules of thumb; Wine pouring