Trust in Vendor and Perceived Effectiveness of E-Commerce Institutional Mechanisms in M-Commerce Adoption: A Revised UTAUT Model

The revolution of World Wide Web has contributed to the growth of e-commerce and m-commerce throughout the world. The number of people adopting m-commerce is growing hotfoot and this research is to examine the several variables that affect the intention in adopting mobile commerce. The Unified Theory of Acceptance and Use of Technology (UTAUT) model is used in this research which includes the four variables: performance expectancy (PE), effort expectancy (EE), social influence (SI) and facilitating conditions (FC). Besides, UTAUT model is extended by adding two independent variables which are perceived effectiveness of e-commerce institutional mechanisms (PEEIM) and trust in vendors (TIV). These two variables provide new sight for UTAUT and this extension of UTAUT is able to investigate the intention of adopting m-commerce in a deeper and wider perspective. Quantitative method is used for this research. 278 sets of questionnaires have been collected. SPSS software was applied and the result showed that all of the hypotheses are supported. This indicates PE, EE, SI, FC, PEEIM, and TIV have significant relationship with the intention in adopting m-commerce. In a nutshell, this study is believed to have contribution for both academics and managerial context.