THE MULTIDIMENSIONAL HEALTH LOCUS OF CONTROL SCALE: PSYCHOMETRIC PROPERTIES AND FORM EQUIVALENCE.

This study examined the psychometric equivalence of Forms A and B of the Multidimensional Health Locus of Control Scale in a sample of college students (N = 370; M = 19.5 yr.; 318 Caucasians; 281 women). Given the dearth of studies that address the issue of form equivalence directly, this study sought to ascertain whether these forms could be used interchangeably by researchers. Subscales on the two forms had fairly high correlations (range of r = .77-.81), and similar alpha and omega reliability coefficients. Additionally, confirmatory factor analysis revealed both forms fit a three-factor model well. However, paired-sample t tests yielded significant mean differences for all three subscales. Furthermore, the two forms yielded inconsistent associations with relevant measures. Although the observed pattern of associations with social desirability and safe swimming behaviors were similar for Forms A and B, the pattern of differences was not identical for smoking groups and bicycle helmet use groups between forms. Overall, these results suggested that Forms A and B do not meet the strict criteria for parallel forms, but instead should be considered alternative forms.

The bicycle helmet attitudes scale: using the health belief model to predict helmet use among undergraduates.

OBJECTIVE: This study examined bicycle helmet attitudes and practices of college undergraduates and developed the Bicycle Helmet Attitudes Scale, which was guided by the Health Belief Model (HBM; Rosenstock, 1974, in Becker MH, ed. The Health Belief Model and Personal Health Behavior. Thorofare, NJ: Charles B. Slack; 1974:328-335) to predict reported helmet use. PARTICIPANTS: Students (N = 337) from a mid-sized university in the southeast completed a survey between November 2006 and November 2007. METHODS: Participants completed a comprehensive survey on attitudes and behaviors relevant to bicycle helmet use. RESULTS: The resulting Bicycle Helmet Attitudes Scale contains 57 items and represents 10 reliable subscales that reflect the HBM. Only 12% of students were self-reported helmet users. Bicycle Helmet Attitudes Scale scores captured 52% of the variance associated with helmet use; each subscale differentiated wearers from nonwearers. Men reported more media influences than did women. CONCLUSIONS: The utility of the HBM to predicted bicycle helmet use was supported. Implications for promoting cycling safety are discussed.