title: Do romantic partners influence each other's heavy episodic drinking? Support for the partner influence hypothesis in a three-year longitudinal study.
abstract: Approximately one in five adults engage in heavy episodic drinking (HED), a behavior with serious health and social consequences. Environmental, intrapersonal, and interpersonal factors contribute to and perpetuate HED. Prior research supports the partner influence hypothesis where partners influence each other's HED.
  
  
  
  We examined the partner influence hypothesis longitudinally over three years in heterosexual couples in serious romantic relationships, while exploring possible sex differences in the magnitude of partner influence.
  
  
  
  One-hundred-and-seventy-nine heterosexual couples in serious relationships (38.5% married at baseline) completed a measure of HED at baseline and again three years later.
  
  
  
  Using actor-partner interdependence modelling, results showed actor effects for both men and women, with HED remaining stable for each partner from baseline to follow-up. Significant partner effects were found for both men and women, who both positively influenced their partners' HED over the three-year follow-up.
  
  
  
  The partner influence hypothesis was supported. Results indicated partner influences on HED occur over the longer term and apply to partners in varying stages of serious romantic relationships (e.g., cohabiting, engaged, married). Women were found to influence their partners' HED just as much as men influence their partners' HED. Findings suggest HED should be assessed and treated as a couples' issue rather than simply as an individual risky behavior.
authors.affiliation: Department of Psychology and Neuroscience, Dalhousie University, Life Sciences Centre, 1355 Oxford Street, PO BOX 15000, Halifax, NS B3H 4R2, Canada. Electronic address: Sara.Bartel@dal.ca.
authors.forename: Sara J
authors.initials: SJ
authors.lastname: Bartel
authors.affiliation: Department of Psychology and Neuroscience, Dalhousie University, Life Sciences Centre, 1355 Oxford Street, PO BOX 15000, Halifax, NS B3H 4R2, Canada.
authors.forename: Simon B
authors.initials: SB
authors.lastname: Sherry
authors.affiliation: Brock University, Department of Child and Youth Studies, 1812 Sir Isaac Brock Way, St. Catharines, ON L2S3A1, Canada.
authors.forename: Danielle S
authors.initials: DS
authors.lastname: Molnar
authors.affiliation: Lakehead University, Department of Psychology, 955 Oliver Rd., Thunder Bay, ON P7B5E1, Canada.
authors.forename: Aislin R
authors.initials: AR
authors.lastname: Mushquash
authors.affiliation: University of Buffalo, Department of Psychology, 12 Capen Hall, Buffalo, NY, USA; University of Buffalo, Department of Psychiatry, 12 Capen Hall, Buffalo, NY, USA.
authors.forename: Kenneth E
authors.initials: KE
authors.lastname: Leonard
authors.affiliation: York University, Department of Psychology, 4700 Keele St., Toronto, ON M3J1P3, Canada.
authors.forename: Gordon L
authors.initials: GL
authors.lastname: Flett
authors.affiliation: Department of Psychiatry, Dalhousie University, 5909 Veterans' Memorial Lane, 8th Floor, Abbie J. Lane Memorial Building, QEII Health Sciences Centre, Halifax, NS B3H 2E2, Canada.
authors.forename: Sherry H
authors.initials: SH
authors.lastname: Stewart
mesh_terms: D000328:Adult; D063425:Binge Drinking / Q000523:psychology*; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D017678:Sex Distribution; D012747:Sexual Partners / Q000523:psychology*
keywords: Binge drinking; Heavy episodic drinking; Sex differences; Social learning theory