APPLYING THE THEORY OF PLANNED BEHAVIOR TO CARPOOLING AS A FORM OF ENVIRONMENTAL COLLECTIVE ACTION

Carpooling is a form of transportation that reduces carbon emissions, lessens travel costs, and helps improve travel conditions. This research examined the influences on intention to carpool as a form of pro-environmental collective action through the integration of the theory of planned behavior (TPB) and the social identity model of collective action (SIMCA). A total of 389 employees in Metro Manila were surveyed via an online questionnaire that measured the influence of the constructs of TPB and SIMCA. Results established that attitudes, perceived behavioral control, and social identity positively influenced intention to carpool. Further analysis showed that attitudes, subjective norms, and perceived behavioral control significantly mediated the effects of social identity and collective efficacy to intention to carpool. Social identity also positively influenced collective efficacy. Overall, the findings support the TPB as a predictor of intention towards pro-environmental behavior, specifically carpooling. Results also demonstrate the applicability of a collective action model to pro-environmental behavior that require a level of collective interaction and collaboration. Keywords: transportation, pro-environmental behavior, social identity model of collective action