The first objective of this paper is to conduct a rigorous quantitative review of 569 findings from 95 Technology Acceptance Model (TAM) studies as a basis for providing guideline for implementation management and conduct of future research. Linked to it is the second objective: to investigate the potential impact of the methodological characteristics on the findings. The findings make it apparent that the dominant focus in the TAM’s studies has been on modeling intention for its effect on self-reported usage, while neglecting the attitudinal construct. This raises three questions: whether the exclusion of attitude from the TAM is beneficial for our understanding of technology usage in mandatory settings, does the revised TAM hold equally for mandatory and voluntary settings, and whether the emphasis on measuring intentions and self-report use rather than actual usage is warranted. An additional question answered is about the relative importance of PU and PEU. The Technology Acceptance Model (TAM) originally formulated by Davis (1986) is one of the widely tested models of technology acceptance. Although, in the last 15 years the TAM has become well established as a powerful model for predicting users’ acceptance of technology, few studies have attempted to validate the full TAM model with its original constructs. Furthermore, the TAM studies are characterized by different methodological factors resulting in conflicting findings which not only undermine the precision of TAM, but also complicate efforts for IT practitioners and academicians.
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