Abstract

The System Usability Scale (SUS) score survey is a widely respected tool for measuring usability. While there are other surveys available such as the User Experience Questionnaire (UEQ) or the Single Ease Question (SEQ), the SUS is amongst the most popular and widely used instrument. SUS provides an easy-to-understand score with benchmarking. Generally, a SUS score is administered directly after a usability test to assess the user experience and the usability of a product, including websites and smartphone apps and more. However, some researchers have used it as a survey as part of a ‘in the wild’ trial which is often completed after the trial or indeed sometime after the subjects interacted with the technology. With this in mind the aim of this research was to see if a participant’s user experience would change if a SUS score was administered at different times after a test to understand if recalling the usability of technology led to temporal bias for the SUS.

Highlights

  • User Experience (UX) as a discipline has evolved considerably over the last number of decades

  • A total of 76 System Usability Scale (SUS) survey completions were collected. This comprises of 33 SUS survey completions at time point 1, 25 at time point 2 and 18 at time point 3

  • In relation to the aims of the current research, the analysis shows that the memory and recollection of a past user experience does not change over a short period of time (3 weeks) nor does the users’ memorability of user experience change

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Summary

Introduction

User Experience (UX) as a discipline has evolved considerably over the last number of decades. The introduction of mediums such as desktop, mobile, and web including, native, audio and tactile input means that over time the process of how we conduct UX design has changed. Designers design experiences and the aim is to make these experiences better [1]. The UX process is an iterative process of Observation → Idea Generation → Prototyping → Testing. This loop is run through multiple times to unsure assumptions are tested and designs revisited. By trying to understand users better, there has been a drive toward UX research through Usability testing

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