Understanding Extended Theory of Planned Behavior to Access Backpackers' Intention in Self-Service Travel Websites

By using Web 2.0, backpackers can easily collect travel information and plan their trips. In this study, the theory of planned behavior and the technology acceptance model were integrated with interpersonal influence, electronic word-of-mouth, flexibility, personal innovativeness, and critical mass to measure their effects on behavioral intentions toward self-service travel. A sample of 284 questionnaires was collected via an online survey. The results indicated that attitudes, subjective norms, and perceived behavioral control had significant effects on backpackers' behavioral intentions. In addition, the perceived usefulness, perceived ease of use, and flexibility of travel websites had significant effects on attitudes toward a given behavior. Moreover, the effects of electronic word-of-mouth, critical mass, and interpersonal influence on subjective norms, and those of self-efficacy and facilitating conditions on perceived behavioral control were significant. Based on these empirical results, theoretical and practical implications for promoting self-service travel websites are proposed.