Usability goals

All are predicted to be measured in low-fi prototype, therefore the time measured is prolonged.

1.

  • It takes a user 10 seconds to change the font to font2
  • 95% of users will finish changing the font to font2
  • Users will grade their satisfaction for changing the font to font2 above 4 on average on a scale 1-5

2.

  • It takes a user 15 seconds to change the background to white
  • 90% of users will finish changing the background to white
  • Users will grade their satisfaction for changing the background to white above 4 on average on a scale 1-5

3.

  • It takes a user 45 seconds to highlight a block a of text and generate a summary
  • 80% of users will finish highlighting a block of text and generate a summary
  • Users will grade their satisfaction for highlighting a block of text and generate a summary above 3 on average on a scale 1-5

User experience

  • Average score on the question below is 4 or greater

    • How well or poorly, on the scale 1-5 has Reformer enhanced your reading abilities?

  • Average score on the question below is at least 4,5

    • How easy or difficult, on the scale 1-5, was it for you to change the font size to your preferred settings?

  • Average score on the question below is at least 4,5

    • How easy or difficult, on the scale 1-5, was it for you to change the background to your preferred settings?