IntroductionCases of preventable diseases continue to occur globally. Much literature is present about barriers and factors that influence vaccination, but little is known about psychologically ingrained decision-making styles and their relationship with vaccination decisions. Design/MethodsThis quantitative descriptive cross-sectional pilot study aimed to explore using an established tool, the Decision Style Inventory (Rowe & Mason, 1987), in parents/guardians of children 2 months to 20 years old. ResultsNineteen parents/guardians participated in this study and provided positive feedback on the Decision Style Inventory (Rowe & Mason, 1987). Descriptive statistics revealed vaccination decisions occurred more frequently with certain decision styles. ConclusionsFurther research examining associations between decision styles and vaccination decisions is warranted. The findings of such research could lead to new tool development that integrates external factors and parental decision-making style. This new tool could allow healthcare providers to select targeted interventions that holistically address parental vaccination decisions.