title: Effects of residential learning communities on drinking trajectories during the first two years of college.
abstract: OBJECTIVE
  Participation in residential learning communities (RLCs) is associated with lower rates of alcohol consumption among college students. This study used variable- and pattern-centered analytic approaches to examine the influence of RLCs on the drinking behavior of students during their first 2 years in college.
  
  
  METHODS
  A Web-based survey was administered to a stratified random sample of 1,196 first-year students (51.8% women) attending a large university. The sample included 456 students (38.1%) who lived in and participated in RLCs and 740 students (61.9%) who did not participate in RLCs (non-RLCs). During their first semester, students reported on their precollege and current drinking. Students also completed measures of alcohol involvement 6 months later during their second semester and 18 months later during their fourth semester.
  
  
  RESULTS
  Mixed factorial analyses of variance showed that RLC students reported fewer drinks per occasion than non-RLC students before college. RLC and non-RLC students showed increases in maximum drinks per occasion from precollege to first and second semesters, but only non-RLC students continued to increase their drinking from second to fourth semester. Latent class growth analyses indicated four trajectory classes: (1) low stable (25.1%), (2) light increasing (19.2%), (3) moderate increasing (36.8%), and (4) heavy increasing (18.9%). Non-RLC students had higher odds of being in the heavy-increasing drinking trajectory class.
  
  
  CONCLUSIONS
  Compared with their non-RLC peers, RLC students not only drink less before college and show smaller increases in drinking over time but also are less likely to be in a high-risk drinking trajectory group. Identification of selection, socialization, and reciprocal influence processes that underlie RLC effects can better inform prevention efforts for sustained lower risk drinking among college students.
authors.affiliation: Substance Abuse Research Center, University of Michigan, Ann Arbor, MI 48105-2194, USA.
authors.forename: James A
authors.initials: JA
authors.lastname: Cranford
authors.forename: Sean Esteban
authors.initials: SE
authors.lastname: McCabe
authors.forename: Carol J
authors.initials: CJ
authors.lastname: Boyd
authors.forename: James E
authors.initials: JE
authors.lastname: Lange
authors.forename: Mark B
authors.initials: MB
authors.lastname: Reed
authors.forename: Marcia S
authors.initials: MS
authors.lastname: Scott
mesh_terms: D000293:Adolescent; D000328:Adult; D000428:Alcohol Drinking / Q000523:psychology* / Q000639:trends; D004522:Educational Status; D005260:Female; D006306:Health Surveys; D006798:Housing; D006801:Humans; D007858:Learning; D008137:Longitudinal Studies; D008297:Male; D009042:Motivation; D011336:Probability; D044469:Racial Groups / Q000706:statistics & numerical data; D012737:Sex Factors; D012931:Social Environment; D012951:Socialization; D013334:Students / Q000523:psychology / Q000706:statistics & numerical data; D014495:Universities / Q000458:organization & administration / Q000706:statistics & numerical data