A model is a data management, production and transfer system organized in explanatory trends of past, current and future relationships. The emphasis on each suggests decision making and strategy execution. The objective of this work was to specify a model for of the perception of utility. An exploratory and cross-sectional study was conducted with a selection of 186 students from a public university in central Mexico, considering their participation in the system of professional practices and social service in local organizations. The validity of the instrument that found a one-dimensional variable that explained 43% of the variance was established, but the research design limited the results to the research scenario, suggesting the extension of the work.

[χ2 = 214.35 (47gl) p = 0.007; GFI = 0.990; CFI = 0.997; RMSSEA = 0.00 1] it was found that the consensus expectation factor determined the intentions to vote (0.56). The scope and limits of the exploratory factor analysis of main axes with a simple and oblique promax rotation with respect to the confirmation of an orthogonal structure are discussed.