Emerald Management Reviews

Design/methodology/approach - A review of the TAM literature is presented to provide the basis for the study which identified and theorized about the general determinants of perceived usefulness (PU), subjective norm, job relevance, output quality, result demonstrability and perceived ease of use (PEOU) to produce an intermediate extension of TAM, termed TAM2, and its further development to produce what is termed TAM3. Posits three relationships that were not empirically tested by Venkatesh (2000) and Venkatesh and Davis (2000): PEOU to PU, moderated by experience; computer anxiety to PEOU, moderated by experience; and PEOU to behavioural intention, moderated by experience. Reports the results of longitudinal field studies to test TAM3, in which data was collected from four unnamed organizations implementing new IT systems.

Findings - The results regarding PU were generally consistent with Venkatesh and Davis (2000), where it was found that PEOU, subjective norm, image, and result demonstrability were significant predictors of PU at all time periods, and job relevance and output quality had an interactive effect on PU such that with increasing output quality, the effect of job relevance on PU was stronger. Reports also that experience moderated the effects of subjective norm on PU such that the effect was weaker with increasing experience, while the effect of image on subjective norm was significant. Reveals also that, consistent with Venkatesh and Davis (2000), computer self-efficacy, perceptions of external control, computer anxiety, and computer playfulness were significant predictors of PEOU.

Practical implications - There are important implications for managerial decision making on IT implementation in organizations.

Originality/value - Presents an important first step in understanding the role of interventions in IT adoption contexts.