When you want to begin an investigation related with the adoption and use of a particular new technology within an organization, the professional or researcher should and must know it exists and that several models are available that can help him to understand the organization situation. Typically, organizations start by choosing the new technologies, sometimes looking only to the objectives that the management or administration want to achieve, leaving aside the needs of those who will be the real users of that technology. For the higher hierarchical levels, the use of technology has only an emphasis on obtaining comprehensive reports about the expected results using this new technology, emphasizing to aside the use and adoption by the other users.
Each model includes existing constructs that explain in part this process of adoption and use. The choice of a model is important because it acts as a predictive tool to obtain information about what is happening in the organization regarding the use and adoption of new technology.
Although the UTUAT is a nine year old model, the researchers still prefer to use other models with more than fifteen years. They think that the older models have already been tested and validated more often. A information system researcher or professional should fight this thoughts, because he must consider that recent models have new approaches, more constructs, more detailed information and at the same time he must contribute to the progress on systems information.

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