Uma proposta de metodologia de avaliação de usabilidade utilizando System Usability Scale e perguntas abertas

Abstract

Knowledge about how to improve the use of software emerged from several areas of knowledge, and over time, the great benefits of continuously seeking these improvements were perceived. However, a formal evaluation process to enable improved usability typically requires a lot of time for data collection and analysis. Within this context, the System Usability Scale emerged, which allows a quick and low-cost overview of the usability of the system, but because it deals only with quantitative data, it brings a somewhat limited view of all aspects of using the software. In this work we seek to propose a methodology that uses the System Usability Scale with open questions to collect the data and how to perform the necessary steps to analyze the data that were obtained. The proposed methodology was applied to evaluate the educational software Luz do Saber Infantil, currently developed by the Educational Media Laboratory, to assess how the COVID-19 pandemic has impacted and what difficulties users face in using the software. The use of the methodology, crossing the quantitative and qualitative data obtained, resulted in a lot of information about the users' perception of use and what usability problems they encountered. Finally, we observe that the proposed methodology manages to obtain an overview of the usability of the evaluated system, quickly and at low cost. We also realized the possibility of making the methodology more robust in future works, increasing the number of steps or validating it from other examples.