Usabilidade e qualidade da informação : avaliação do Portal do aluno da Universidade Federal do Espírito Santo

Abstract

This study aims to evaluate the Espírito Santo Federal University Student’s Portal, identifying factors associated with usability that affect the perception of information quality and differentiating user groups according to the usability of the Portal. To this end, a survey was performed through a questionnaire applied to its users, with predominantly quantitative approach. The profile of the students, besides the context in which they use the Portal and also how they evaluate the reports and activities were described here. From the model developed in this study, which comprised six usability dimensions (learnability, memorability, efficiency, satisfaction, errors support and utility), it was found that, except the learnability, the remaining dimensions are statistically significant in the perception of information quality, being satisfaction the most influential dimension. Through the cluster analysis, based on assessments of the factors associated with meeting of expectations and the results of the use of the website (satisfaction, efficiency and utility), three groups were identified: the first group of students that best assessed these factors as well as activities, reports and information quality of the Portal; the second which evaluated moderately; and the third one which rated worse. By simple regression using the average of the usability dimensions, it was also found that the information quality is strongly correlated (r = 0.7) with the usability of the Portal, having a predictive power of 49%. Responses were also obtained about what was more confusing and suggestions for improvements helped to formulate, in conjunction with other analyzes, the proposals of the Intervention Plan. Although it still has deficiencies, on a scale 0-5, the Portal was rated above average in the satisfaction dimension (3.42), as well as achieved obtained a general average of 3.31 in quality of information and 3.69 in usability. Thus, the results indicate that it has fulfilled its function