Using attitude and social influence to develop an extended trust model for information systems

Abstract

This research extends an initial trust model proposed and empirically tested by McKnight, Choudhury, and Kacmar (2002) in an e-commerce context. This trust model is extended by the addition of two key constructs: trusting attitude and subjective norm. These added constructs improve the theoretical foundation of this model by more closely aligning it with the theory of reasoned action. The extended trust model is applied to the context of information systems, specifically a national identity system. Survey data collected in an experimental setting were used to test and compare the extended trust model against the initial trust model. Empirical results indicate that the additional constructs of trusting attitude and subjective norm explain significantly more variance in initial trusting intentions.