System Usability Scale, a common Usability comparison tool

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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 ...
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1answer
29 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: ...
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2answers
68 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 ...
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0answers
50 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?
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1answer
41 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 ...
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5answers
254 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 ...
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38 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 ...
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2answers
118 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 ...
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2answers
99 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 ...
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64 views

What are the metrics for measuring security and cognitive load as attributes of usability?

I want to know the standard metric one can use to measure security and cognitive load as attributes of usability in Mobile E-Commerce site application. The explanation should be base on users' ...
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4answers
232 views

System Usability Scale (SUS)

Can SUS be used in order to test the usability of a document? Any guidelines will be much appreciated.
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1answer
104 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 ...
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1answer
405 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 ...
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150 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!
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4answers
588 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 ...
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1answer
286 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 ...
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2answers
363 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 ...
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2answers
916 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 ...
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2answers
443 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 ...
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3answers
1k 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 ...
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2answers
132 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 ...
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5answers
936 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 ...