Very rich usage of information systems: a longitudinal study of video conferencing applications.

In this study, we aim to gain a comprehensive understanding of factors that precede and follow <italic>very rich system usage</italic> within the specific use context of a contemporary IS. Based on in-depth review of literature and analysis of prior studies, we propose a conceptual research model that links comprehensiveness of usage, very rich system usage, use behaviour, and continuance usage moderated by habit. We empirically evaluate the research model using longitudinal data collected over two periods from users of video conferencing applications. The study findings suggest that <italic>very rich system usage</italic> is pivotal to explain IS continuance usage, but that the comprehensiveness of usage and very rich usage is context specific and tied to the technological functionalities of the information systems in use. [ABSTRACT FROM AUTHOR]