UXtweak

What is the System Usability Scale (SUS score)?

The system usability scale is a standardized questionnaire used to measure the perceived usability of a product. It consists of 10 questions, which respondents answer using a 5-point Likert scale. Their answers indicate their level of agreement or disagreement with the statements, where 1 stands for strongly disagree, and 5 means strongly agree.

The System Usability Scale has become one of the most well-known and most commonly used methodologies in usability assessment. It’s quick, easy to calculate, reliable, and quite versatile, so the SUS score can be used while testing websites, mobile apps, or software platforms.

Learn how to calculate and enterpret the SUS score with an example on out YouTube - link in BIO

What is the difference between explorative and evaluative user inteviews?

During explorative interviews, you try to understand what users actually need before you start designing solutions.

During evaluative interviews, the goal is to validate whether a solution you have prepared actually solves the user’s problem and meets their needs.

For each type of the user interviews, you need to clearly define what questions need to be asked, how many questions you need to ask (without overwhelming your participants), and whether you will conduct interviews online or in-person.

It’s always best to create a user interview plan with this aspects noted down before you start your research to keep it structured and the user interview process efficient.

Learn more about user interviews with our video guide on our YouTube channel - link in BIO.