I've found mention of them BUT, I don't find them. Ideally, I seek the all-positive versions. Thanks!

  • 2
    At the other end of a Google search, I think.
    – André
    Jan 20, 2014 at 11:21
  • If you can find a published study which used one of them, write directly to the corresponding author and ask for it. They may just give it to you.
    – Rumi P.
    Jan 27, 2014 at 10:09

2 Answers 2


André is right. I found a Portuguese one for you: http://meiert.com/en/blog/20091127/sus-how-to-grade/ (near the bottom of post, in updates).

There's also a good chance that you are seeing references to versions of the SUS that the researchers themselves have translated.


I know this is a really old question, but just in case someone else needs it for future reference, try Sistema de Escalas de Usabilidad: ¿qué es y para qué sirve? in Spanish

(Disclaimer: I'm the author of the article)

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