Anol Bhattacherjee

Individual Trust in Online Firms: Scale Development and Initial Test

The importance of trust as a key facilitator of electronic commerce is increasingly being recognized in academic and practitioner communities. However, empirical research in this area has been beset by conflicting conceptualizations of the trust construct, inadequate attention to its underlying dimensions, causes, and effects, and lack of a validated trust scale. This paper addresses these limitations in part by theoretically conceptualizing and empirically validating a scale to measure individual trust in online firms. The proposed scale taps into three key dimensions of trust: trustees ability, benevolence, and integrity. An iterative testing and refinement procedure using two field surveys of online retailing and online banking users, leads to a final seven-item trust scale that exhibits adequate levels of reliability, convergent validity, discriminant validity, and nomological validity. It is expected that the scale presented in this paper will assist future empirical research on trust in online entities.

Acceptance of e-commerce services: the case of electronic brokerages

This paper examines human motivations underlying individual acceptance of business-to-consumer (B2C) electronic commerce services. Such acceptance is the key to the survival of firms in this intensely competitive industry. A modified theory of planned behavior (TPB) is used to hypothesize a model of e-commerce service acceptance, which is then tested using a field survey of 172 e-brokerage users. We found TPB was useful in explaining e-commerce service acceptance, however, acceptance motivations were significantly different from that of typical IS products. Based on a broader conceptualization of TPBs subjective norm to include both external (mass-media) and interpersonal influences, we report that subjective norm is an important predictor of e-commerce acceptance, behavioral control has minimal impact on e-commerce acceptance, and external influence is a significant determinant of subjective norm. Implications of these findings in light of e-commerce research and practice are discussed.

The Impact of ERP Implementation on Business Process Outcomes: A Factor-Based Study

Failures in large-scale information technology implementation are abundantly documented in the practitioner literature. In this study, we examine why some firms benefit more from enterprise resource planning (ERP) implementation than others. We look at ERP implementation from a technological diffusion perspective, and investigate under what contextual conditions the extent of ERP implementation has the greatest effect on business process outcomes. Using empirical data, we find that the extent of ERP implementation influences business process outcomes, and both ERP radicalness and delivery system play moderating roles. For information systems (IS) practice, this study helps managers direct their attention to the most promising factors, provides insights into how to manage their complex interactions, and elaborates on their differential effects on business process outcomes. For IS research, it integrates innovation diffusion theory into our current knowledge of ERP implementation and provides theoretical explanations for ERP implementation failures.

Elucidating Individual Intention to Use Interactive Information Technologies: The Role of Network Externalities

A model of interactive information technology (IT) usage that integrates network externalities with traditional usage motivations is proposed and is validated by a survey of instant messaging (IM) usage by university students in Taiwan. Network benefit, found to be a significant usage motivation, arises from direct and indirect sources, conceptualized as referent network size and perceived complementarity, respectively. Network benefit has a direct effect on user intention to use interactive IT and an indirect effect mediated by perceived enjoyment, and in turn it is affected by perceived complementarity. IT vendors can enhance product value by investing in value-added complementary products and services. Implications for IT usage theories and managerial practice are discussed.

Why end-users move to the cloud: a migration-theoretic analysis

This study presents and empirically validates a model of end-user migration from client-hosted computing to cloud computing. Synthesizing key findings from IT adoption and post-adoption research, switching research, and cloud computing studies, it builds an integrative framework of cloud migration using migration theory as a theoretical lens, and postulates interdependencies among these predictors. A longitudinal survey of Google Apps adoption among student subjects in South Korea validates our proposed model. This study contributes to our nascent body of knowledge on IT migration by drawing attention to this emerging phenomenon, demonstrating how migration research is different from IT adoption research, identifying salient factors that enable or hinder cloud migration, elaborating interdependencies between these different predictors, and bringing in migration theory as a referent theory to the information systems literature.

A unified model of IT continuance: three complementary perspectives and crossover effects

This study presents a unified model of information technology (IT) continuance, by drawing upon three alternative influences that are presumed to shape continuance behavior: reasoned action, experiential response, and habitual response. Using a longitudinal survey of workplace IT continuance among insurance agents at a large insurance company in Taiwan, we demonstrate that the above influences are interdependent, complementary, and have crossover effects. This study advances IT continuance research by theorizing and validating a unifying model that extends prior perspectives and by explaining interrelationships between these perspectives.

Understanding online social support and its antecedents: A socio-cognitive model

Abstract Little attention has been paid in previous literature to understanding the factors that drive online social support from a perspective of social psychology. This study validates a research model that examines the above issue. In the setting of information technology, this study postulates self-efficacy and online support expectancy as the key drivers of information technology usage, whereas information technology usage and referent network size jointly influence online social support. This study contributes to the social science literature by extending information technology usage models to the area of rarely explored online social support and by presenting an operationalization of referent network size in the area.

The Differential Performance Effects of Healthcare Information Technology Adoption1

Abstract This article examines the relationship between the adoption of healthcare information technology (HIT) and a hospitals operational performance. Combining primary survey data from Florida hospitals and secondary data from two government agencies responsible for hospital certification and licensing, the authors find differential performance effects for different clusters of HIT: administrative, clinical, and strategic. Only clinical HIT investments were found to have a statistically significant positive effect on operational performance.

Knowledge transfer and utilization in IT outsourcing partnerships: A preliminary model of antecedents and outcomes

We developed a nomological network of antecedents and outcomes of knowledge transfer and utilization in IT outsourcing relationships, and tested it using a survey of 146 IT outsourcing partnerships in Singapore. Our findings showed that the characteristics of outsourcing clients, vendors, and knowledge transferred played important roles in facilitating knowledge transfer; the transferred knowledge in conjunction with the knowledge integration mechanisms affected knowledge utilization in client-firms, and that this generated significant operational and strategic performance gains in IT operations. Our findings can aid practitioners determine how to use outsourcing to improve knowledge management in their organization.

Physicians' Resistance toward Healthcare Information Technologies: A Dual-Factor Model

This paper proposes and validates a theory of physician resistance toward IT usage by drawing on prior research in the resistance to change literature and a recent dual-factor model of IT usage. This theory elaborates the interdependent and asymmetric effects of resistance vis-a-vis current usage predictors such as behavioral intention. Additionally, we propose perceived threats as a salient determinant of user resistance in the IT usage context. The resulting model is empirically supported via a survey of practicing physicians at a large acute-care hospital in the southeastern United States. Implications of this research for IT research and practice are discussed