Dimensionality and psychometric analysis of an alcohol protective behavioral strategies scale

J Drug Educ. 2011;41(1):65-78. doi: 10.2190/DE.41.1.d.

Abstract

Objective: The current study examined the dimensionality of a protective behavioral strategies (PBS) measure among undergraduate, predominantly freshmen (92.5%) college students reporting recent alcohol use (n = 320).

Method: Participants completed a web-based survey assessing 22 PBS items. Factor analyses determined the underlying factor structure of the items. Congruence of the factor structure among gender and racial sub-groups was examined by rotating the sub-groups' matrices via the Procrustes rotation method. Reliability analyses determined internal consistency.

Results: A 2-factor solution was retained utilizing 17 of the original items. Both PBS sub-scales (Limits and Avoidance) had acceptable internal consistency across all samples.

Conclusions: This PBS Scale was determined to be bi-dimensional and reliable. The dimensions suggest two underlying foci: ways to limit alcohol intake and ways to avoid alcohol intake while socializing. Practical implications of these findings are discussed.

Publication types

  • Research Support, N.I.H., Extramural
  • Validation Study

MeSH terms

  • Adolescent
  • Adult
  • Alcohol Drinking / psychology*
  • Alcoholism / diagnosis*
  • Alcoholism / prevention & control
  • Female
  • Health Behavior*
  • Humans
  • Internet
  • Male
  • Psychometrics / instrumentation*
  • Psychometrics / standards
  • Students
  • Universities
  • Young Adult