Questions tagged [sus]

System Usability Scale, a common Usability comparison tool

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17
votes
5answers
1k views

SUS Scores and Doubts

My team just started using the SUS to baseline our applications against each other. There are some doubts regarding the relation of the questions to web applications and web sites. At times study ...
14
votes
5answers
2k views

What to do if SUS scores contradict qualitative feedback?

TL;DR: qualitative data collected in a usability experiment seems to contradict the quantitative results of the SUS questionnaire. How can this discrepancy be reconciled? The following experiment is ...
11
votes
3answers
2k views

What is the standardized german version of the system usability scale (SUS)?

I tried to find a standardized version of the system usability scale in German. Does one exist, and if yes, what is it. There were a lot of differences between the translations I found. possible ...
9
votes
6answers
3k views

Alternatives to System Usability Scale (SUS)

What major 'competitors' exist for the SUS survey? Is there anything picking up a significant degree of acceptance as a standard to the extent that SUS has? In particular...is there anything which ...
6
votes
2answers
299 views

WAMMI vs SUS global score

are the global scores of the WAMMI and SUS questionnaires comparable? Does a website with a WAMMI score of 95 have a better usability than a website with a SUS score of 85? If they aren't directly ...
5
votes
2answers
788 views

System Usability Scale in Spanish/other languages?

Does anyone know of a good Spanish translation of the System Usability Scale (SUS) survey? Unfortunately I'm not a Spanish speaker myself however am testing with people who are. A solid resource of ...
5
votes
1answer
782 views

Comparing the WAMMI and SUS scales

From doing a lot of research about standardized measurement for usability, I came across the WAMMI questionnaire which looks at a few of the factors in usability that goes into more detail than the ...
5
votes
1answer
123 views

Is there a median SUS score for internal-facing apps, vs customer-facing apps?

I am about to execute a System Usability Scale survey for an app that is only used within our organization, not by the general public. I understand that the median score for all apps is 68, and am ...
4
votes
4answers
3k views

How to measure Success rate?

I'm reading this book: Tullis, Thomas, and William Albert. Measuring the user experience: collecting, analyzing, and presenting usability metrics. Morgan Kaufmann, 2010. In this book, 5 usability ...
4
votes
2answers
711 views

On SUS Usability Questions, the first one “I think that I would like to use this website frequently” does not make sense

On SUS - the question "I think that I would like to use this system frequently" does not make sense for sites which are used infrequently, for example a mortgage payment site. How does this question ...
4
votes
2answers
992 views

Can SUS scores be used for comparison between different systems?

The System Usability Scale (SUS) resulted score seem to me as somewhat subjective. What ever score yields from a questionnaire for System A may just solely be just for System A, and is difficult to ...
4
votes
2answers
144 views

Is there any research on mitigating the effects of using a non-representative user group on measuring perceived usability?

My client is running a series of vendor demonstration where they want the staff to measure the perceived usability of the system (SUS and SEQ). Originally we asked for a consistent group of ...
4
votes
1answer
1k views

How many users do I need to run a SUS and get valid result?

I ran a System Usability Scale survey on my team (7 people) but I'm not sure that's enough to get relevant result and I didn't find any article recommending anything about the number of people to ...
4
votes
1answer
215 views

How to check for Inconsistent Respondents in System Usability Scale (SUS)?

I'm trying to evaluate the validity of the SUS responses- I think it's also called internal reliability or Response bias. How is this done for SUS?
3
votes
2answers
2k views

How to interpret SUS learnability score?

Learnability- a component of the System Usability Scale scored 13,45. Is that below or above average? When broke into two groups of users (role-based) one group scored 6,88 and the second scored 15,...
3
votes
4answers
427 views

System Usability Scale (SUS)

Can SUS be used in order to test the usability of a document? Any guidelines will be much appreciated.
3
votes
2answers
2k views

Where can I find existing System Usability Scale (SUS) results to compare against?

I'm looking for a resource of existing System Usability Scale (SUS) study results to compare against. I've read in a few papers/webpages that plenty of such data is available, unfortunately I can't ...
3
votes
1answer
238 views

What are the best ways to get SUS score on mockups?

Can we just showcase static mockups to users and as them to respond to SUS questionnaire? Or, is it good to provide a clickable mockups so that they can get a feel of the workflow? Do we have any ...
3
votes
2answers
582 views

Usability measurement: Nielsen's Attributes of Usability versus the SUS

From my research, the SUS seems to be the industry standard when it comes to measuring usability through a questionnaire. There are of course plenty of other instruments. Nielsen's attributes of ...
2
votes
2answers
227 views

Measuring the user experience of Augmented reality application for elderly

I'm conducting a study on elderly experience of AR application. The plan was to use SUS (System Usability Scale) to measure the ease of use. Then, after planning the whole thing, I realized I made a ...
2
votes
2answers
185 views

Performing a System Usability Scale test

I want to perform a System Usability Scale test on two different designs of an application. I already found this link to a description and a rough explanation on how to do so, but what exactly is ...
2
votes
2answers
374 views

SUS usabilty questionnaire

I am new to SUS questionnaire. I want to use five questions form SUS in my research. I am taking 3 even questions and 2 odd questions. Using questionnaire this way will it misinterpret my results. Can ...
2
votes
1answer
1k views

User Testing Framework and Questions for comparative tests

I am planning to conduct a number of task-based moderated think aloud tests for a service that I am designing. I will be repeating the test with the same setup regularly throughout the year and I am ...
2
votes
1answer
97 views

How much margin (if any) should I allow for in calculating SUS?

I'm running a use test for 12 participants split into 2 sets of 3 subgroups (user type and user location - these are NOT mutually exclusive groups). I need to produce 7 different SUS results: overall,...
2
votes
1answer
60 views

Should a Store Landing Page have separate appt. selector- one for workshops & one for tech support, etc

I am having a bit of a challenge with my stakeholders in helping them understand my point of view on how to handle our appointments for workshops and product-driven/assistance questions. My company ...
2
votes
1answer
147 views

Best way to use/tweak SUS for Enterprise Applications?

I was wondering if there was a vetted type of questionnaire developed for Enterprise applications that modifies the questions that may not apply to a given system. Examples: Systems like a ...
1
vote
1answer
54 views

SUS evaluation on the same system but different sections and participants

Would it be okay to use 2 SUS scores to come up with a single score in the case I explain below: I conducted a user testing for a banking mobile app, the app under investigation has lots of tasks ...
1
vote
2answers
173 views

Example SUS scores / proof of outcome?

I'm currently investigating the probability of introducing System Usability Scale (SUS) as a means of quantifying the comparison of new vs. old systems. The system in-question is like-for-like, and as ...
1
vote
2answers
72 views

SUS Questions- Infrequent Experience

We started using the SUS to baseline our online activation process experience, but the first question: I think that I would like to use this system frequently. doesn't suite an infrequent ...
0
votes
1answer
159 views

System Usability Scale and internal reliability

What pairs of questions test respondent's consistency? For example, questions 2. and 3. seem to be asking the same thing, but in a way that if respondent is consistent he/she can't be agreeing with ...
0
votes
1answer
145 views

Are the System Usability Scale (SUS) questions copyrighted?

I would like to know whether the official english SUS questions are copyrighted, or if I may use them in a commercial product. A Google Search doesn't provide many hints, although the paper in which ...
0
votes
2answers
434 views

Using SUS to measure usability of an existing system and compare with a redesigned system

I will be undertaking a whole-scale redesign of an existing system. I'd like to use SUS ("System usability scale") questionnaires to measure improvements between iterations. As a baseline, I want to ...
0
votes
2answers
281 views

Where can I find Spanish & Portuguese versions of the System Usability Scale (SUS)?

I've found mention of them BUT, I don't find them. Ideally, I seek the all-positive versions. Thanks!
0
votes
1answer
120 views

Is it valid to administer a SUS questionnaire after a system training session?

We would like to do some tests to determine usability and learnability of a new system we have produced. We have a very short time period, so right now we are only looking at something quick and high-...
0
votes
0answers
14 views

How many questions do I need for SUS method

I'm currently conducting a research, and I want to use SUS method, as we know based on the literature, the questionnaire consists of a 10 item questions with five response options for respondents. ...
-1
votes
1answer
71 views

Is there something like a System Usability Scale (SUS) for customization?

I am wondering if there is a way to measure the customization of a Software product. To be honest I am not really sure how such a measure should look like, but maybe I can find some ideas here.