Exploring Two Methods of Usability Testing: System Usability Scale And Retrospective Think-Aloud

I Wayan Pio Pratama; Eka Sudarsana I Putu Eka Sudarsana; Angling Angling Galih Cahaya Widiyanto

doi:10.63604/javok.v2i1.26

Authors

I Wayan Pio Pratama Politeknik eLBajo Commodus, Labuan Bajo, Indonesia
I Putu Eka Sudarsana Politeknik eLBajo Commodus, Labuan Bajo, Indonesia
Galih Cahaya Widiyanto Politeknik eLBajo Commodus, Labuan Bajo, Indonesia

DOI:

https://doi.org/10.63604/javok.v2i1.26

Keywords:

RTA, SUS, Completion rate, Time-based efficiency

Abstract

This research was conducted to measure the usability of a system using two methods, RTA (Retrospective Think Aloud) and SUS (System Usability Scale). An object used in this research was shazam. The subject were 5 people, who are smartphone users in the age range of 10 to 50 years old. Finally, in this research RTA method showed that the shazam application is effective with a completion rate of 94.3% and efficient with a time-based efficiency of 0.108 task/second. While SUS showed that Shazam is still categorized as a class B application.

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