A metric is a system or standard of measurement represented in units that can be utilized to describe more than one attribute. Perceived usability affects greatly students learning effectiveness and overall learning experience, and thus is an important requirement of educational software. The sus consists of only 10 questions, which are answered using a scale from 1. In general, participants who spent more time on the tasks rated the usability lower, which demonstrated the criterionrelated validity of both questionnaires. This guide describes the two approaches we take to software evaluation, providing a set of guidelines that researchers and developers may find useful in performing their own assessments of code quality, usability and overall sustainability. The system usability scale is shown in the next section of this chapter. Providing an assessment tool to determine the ease and usability of your website and technological apps. System usability scale an overview sciencedirect topics. Todays webbased applications webapps containing complex business logic and which are sometimes critical to operating the business, now must have an increased focus on usability as. Usability and user experience surveys edutech wiki. It can be seen that the selected statements actually cover a variety of aspects of system usability, such as the need for support, training, and complexity, and thus have a high level of face validity for measuring usability of a system.
Methodology system usability scale measurement tool. Dec 14, 2017 usability was coded as positive, negative, or equivocal if the usability evaluators considered the ehr features to be desirable, undesirable, or ambivalent, respectively. System usability scale survey template by questionpro is a questionnaire that is used to evaluate the usability of a project. It is applicable to a range of application types from desktop applications to large domaincomplex.
How to design a comprehensive ehr usability assessment. Context of use the evaluation of the usability of the user interface has to be placed in the context of the use of an overall system, consisting of the user, his or her job and tasks, the hardware and software, and the organizational, technical, and physical environment. This page seems to be the best starting point for exploring well known webbased usability evaluation questionnaires 3. The purpose of evaluation can be to improve the usability of the product as part of designdevelopment formative evaluation, or to assess the extent to which usability objectives have been achieved summative evaluation. Pdf perceived usability evaluation of learning management. The system usability scale sus is a popular usability questionnaire thats free and short at 10 items. The purpose of evaluation can be to improve the usability of the product as part of designdevelopment formative evaluation, or to assess the extent to which usability objectives have been. Usability study of mainstream wearable fitness devices. The usability of a software tool or application is recognized as the main component of the user experience. Although the huawei honor band b2 received the highest score mean 67. In systems engineering, the system usability scale sus is a simple, tenitem attitude likert.
For example, the system usability scale brooke, 1996. You could share it at the end of the test to assess your overall system or. The system usability scale, or sus, was created in 1986 by john brooke as a quick and dirty way to measure the usability of products usability. How to analyze and evaluate usability tests hotjar. This article presents nearly 10 years worth of system usability scale sus data collected on numerous products in all phases of the development lifecycle. Microsoft word and on the use and the system usability scale sus, brooke, 1996. This chapter describes the system usability scale sus a reliable, lowcost usability scale that can be used for global assessments of systems usability. Empirical evaluation of the system usability scale. One of the most popular questionnaires is the sus which is short and does seem to yield reliable results across sample sizes tullis and stetson, 2004. In particular, it is most recommended for software applications. Its based on a 100point scale, and provides a global subjective evaluation of the users satisfaction with the system based on performance. Our criteriabased approach is a quantitative assessment of the software in terms of sustainability, maintainability, and usability. Some think of usability as the software specialization of the larger topic of ergonomics. The usability of a product is contextual and depends on the different roles of users, environments and tasks they need to do.
Raw scores can be associated with a database of 200 other websites. Its important to measure effectiveness relative to these and to make sure we have quantitative and qualitative data to help us collect information and compare against benchmarks. Youll want to consider the five easeofuse criteria we list at right. This approach forms the basis of our online sustainability evaluation, a webbased assessment you can use straight out of the box. The system usability scale sus is a questionnaire which can be used to help evaluate the usability of a project. How to use the system usability scale sus to evaluate the. I usually use net promoter score nps and system usability scale sus as parameters. Usability is the methodology used to determine the software performance. There is no consensus about the relation of the terms ergonomics or human factors and usability. It is one of the most widely used tools to assess the usability features of hardware or software applications. It has been used extensively by various industries to test numerous systems and applications, including hardware, software, mobile devices, websites and applications usability. It is applicable to a range of application types from desktop applications to large domaincomplex applications.
The software usability measurement inventory is a rigorously tested and proven method of measuring software quality from the end users point of view. The sus, developed by brooke 1996, reflected a strong need in the usability community for a tool that could quickly and easily collect a users subjective rating of a products usability. The system usability scale sus includes 10 items using a fivepoint response items strongly disagree strongly agree. Metrics come in very handy when it comes to quantify usability during the usability evaluation of software, websites and applications why would you need to measure usability there are many reasons why you would measure usability. Nov 05, 2018 one of the most important things to look at in the hyperlinks to the full usability reports is the sus or system usability scale. Sus is technology independent and has since been tested on hardware, consumer software, websites, cellphones, ivrs and even the yellow.
Criteriabased assessment mike jackson, steve crouch and rob baxter criteriabased assessment is a quantitative assessment of the software in terms of sustainability, maintainability, and usability. A method for comparing the relative usability of different software systems, behaviour and information technology 16 n. Nielsen established the discount usability engineering movement for fast and cheap improvements of user interfaces and has invented several usability methods, including heuristic evaluation. The smartphrase tool, as evaluated by telephone triage nurses, was not perceived as particularly useful. System usability scale survey template sample survey.
Usability and context usability is not a quality that exists in any real or absolute sense. The system usability scale sus provides a quick and dirty, but a reliable tool for measuring the usability. Usability evaluation focuses on how well users can learn and use a product to achieve their goals. The present study aimed to evaluate the usability of ulite software based on the iso 9241 model. Usability metrics a guide to quantify the usability of.
Jan 14, 2020 once youve finished running your usability testing sessions, its time to evaluate the findings. Aug 04, 2019 what do users think of the overall usability of the application. Kirakowskis research provided evidence for construct validity and sensitivity by reporting on the collection of over 1,000 surveys that evaluated 150 different software products. However, surprisingly few studies have used sus to evaluate the perceived usability of learning management. Usability represents an important yet often overlooked factor impacting the adoption and meaningful use of electronic health record ehr systems. However, surprisingly few studies have used sus to evaluate the perceived usability of learning management systems lmss. System usability scale ryte wiki the digital marketing. Perceived usability evaluation of learning management. At its core, a good ucd process is about involving users early and often, and using proven patterns in software design. The software usability measurement inventory sumi consists of 50 items with a 3point likert scale representing five latent variables kirakowski, 1996. Psychometric evaluation of the use usefulness, satisfaction, and ease of use questionnaire for reliability and validity. Bangor, kortum and miller have used the scale extensively over a tenyear period and.
Mar 18, 2016 ehr usability is a patient safety issue. The telehealth usability questionnaire tuq was developed to evaluate the usability of telehealth implementation and services. Nist usability experts brought together hundreds of organizations to develop an international reporting standard to improve software usability. The effect of experience on system usability scale ratingsjus. Presented at software test professionals, new orleans 2012. Deutschsprachige fragebogen zur usability evaluation im vergleich. Without usable systems, doctors, medical technicians. Usability describes the quality of user experience across websites, software, products, and environments. Additionally, the scales of the questionnaires showed medium to high correlations. Most of these can be adapted without too much difficulty to suit the purpose of evaluating the ux of a website. Sus is technology independent and has since been tested on hardware, consumer software, websites, cellphones, ivrs and even the yellowpages. Because of the complexities associated with evaluating ehr system usage, employing usability evaluators with dual domain knowledge both usability experience and health care knowledge was crucial. Development of the telehealth usability questionnaire tuq. Measuring usability with the system usability scale.
An overview of the system usability scale in library. Usability evaluation of electronic health record system. The system usability scale sus is a great way to evaluate the usability of your product. The system usability scale sus a is a wellresearched and widely used questionnaire for perceived usability evaluation. Usability evaluation model for biometric system considering. Assessing the usability of a product with the purpose of identifying usability problems andor obtaining usability measures. Bangor, kortum and miller have used the scale extensively over a ten year. Originally created by john brooke in 1986, it allows you to evaluate a wide variety of products and services, including hardware, software, mobile devices. Jun 28, 2010 the regional extension centers, the american college of physicians, klas and other organizations provide comparative data on emr usability, but their evaluations are subject to financial conflicts involving the very emr vendors that they evaluate. Lin, han x choong, yeeyin and salvendy, gavriel 1997.
The system usability scale sus measures the perceived usability of a system, or as. Software usability measurement inventory sumi 2 is a rigorously tested and proven method of measuring software quality from the end users point of view. An overview of the system usability scale in library website. The system usability scale sus provides a quick and dirty, reliable tool for measuring the usability. System usability scale ryte wiki the digital marketing wiki. John brooke developed the system usability scale in 1986. For example, some of these entities require vendors to pay for the right to be evaluated. Even though severity has several components, it is common to combine all aspects of severity in a single severity rating as an overall assessment of each usability problem in order to facilitate prioritizing and decisionmaking. One of the main purposes of measuring usability is to provide a method to evaluate the user experience for the interaction designer. Asking the right user experience questions by jeff sauro, phd december 5, 2012. The sus consists of only 10 questions, which are answered using a scale from 1 to 5 lickert scale. Applying the dataknowledgeinformationwisdom framework to a. Measuring usability with the system usability scale sus. Software evaluation guide software sustainability institute.
The system usability scale is a likert scale which includes 10 questions which users of your website will answer. Usability evaluation methods usability body of knowledge. If you evaluate your upcoming software demonstrations using the five best practices we just shared, youll be ahead of 99% of software buyers. The screen shot of the field observers data collection tool with nodes is shown in fig. System usability scale sus the system usability scale sus provides a quick and dirty, reliable tool for measuring the usability. It was developed by john brooke at digital equipment corporation in the uk in 1986 as a tool to be used in usability engineering of electronic office systems. Usability is the extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency and satisfaction in a specified context of use iso9241. So, we need to measure the attitude of a user towards the software. Bevan, n, kirakowski, j and maissel, j, 1991, what is usability. It has become an industry standard with references in over 600 publications. In the study, ehrs earned an average score of 45 on the system usability scale, a standard metric used to measure technology usability on a scale of 0 to 100. Usability questionnaire an overview sciencedirect topics.
Perceived usability evaluation of learning management systems. Everything you need to know about the system usability scale sus to measure. System usability scale measurement tool quick usability. Physicians score ehrs an f on usability, study finds. System usability scale sus is a questionnaire that is used to evaluate the usability of products and services. System usability scale online with analytics usabilitest. Participants will rank each question from 1 to 5 based on how much they agree with the statement they are reading. The system usability scale sus is a wellresearched and widely used questionnaire for perceived usability evaluation. It also refers to how satisfied users are with that process. The following 0 to 4 rating scale can be used to rate the severity of usability problems. Although the usability score was at an acceptable level, this may be indicative of usability problems requiring improvement.
Reassessing the usability metric for user experience. While several studies attempted to evaluate the usability of biometric systems, most studies used the concept of usability as defined by iso 924111. The sus has been widely used in the evaluation of a range of systems. The system usability scale, developed by john brooke at digital equipment. It is common practice to substitute website, product, or interface for system without affecting the results. System usability scale sus is one of the most efficient ways of gathering statistically valid data and giving your appsite a clear and reasonably precise score. Usability is basically used to determine the strength and weakness of an application from the end user point of view. Analysis and performance evaluation of software system usability. Way before you start thinking about what you will test and how, you need to devise a usability test plan.
After performing user interviews or usability testing. Reassessing the usability metric for user experience umux. The demonstration is your best chance to answer that question for yourself. Nov 08, 2018 low system usability scale scores for seven wearable devices. In this regard, the best way to evaluate the usability of mobile applications is through usability testing. This quick and dirty assessment tool seeks to determine if the software utilized by nursing professionals meets the demands of daily job activities. Using usability heuristics to evaluate patient safety of.
Take your raw sus score and convert it to a percentile rank relative to 500 other products or several industry benchmarks. Conducting a comprehensive ehr usability assessment can give healthcare organization leaders the insight to guide effective ehr optimization efforts. The questionnaire is used as a quantitative analysis method within the framework of usability tests. Companies in every industry need software that their employees and customers can easily learn to use without error, but for years there was no way for them to evaluate the usability of software before or after purchase. That makes sense, since your success with a new software system is dependent on your ability to quickly get uptospeed and start using the system. In systems engineering, the system usability scale sus is a simple, tenitem attitude likert scale giving a global view of subjective assessments of usability.
How to measure product usability with the system usability scale. These survey questions are used as a quantitative method to evaluate and get actionable insights on the usability of a wide variety of new systems which may be either software or hardware. User engagement scale for evaluation of usability usability of a software is more critical than the user satisfaction of the software. A background report on usability and electronic health records prepared by westat under contract no.
An overview of the system usability scale in library website and. This questionnaire is used as a quantitative method to dwell upon the global view on the subjective assessment of usability. As you can see, the statements use the word system, which reflects its original use for software evaluation. The system usability scale sus was originally created as a quick and dirty scale for administering after usability tests on systems like vt100 terminal greenscreen applications. The system usability scale sample survey template consists of only 10 questions, which are answered using a likert scale. According to usability net, 3 sumi is a mature questionnaire whose standardization base and manual have been regularly updated.
The usability metric for user experience umux scale is a new addition to the set of standardized usability questionnaires, and aims to measure perceived usability employing fewer items that are in closer conformity with the iso 9241 1998 definition of usability finstad, 2010. It measures the perceived usability level of a product. This can inform highlevel decisions on specific areas for software improvement. The sus is a 10 item questionnaire with 5 response options. Usability evaluation and analysis once youve finished running your usability testing sessions, its time to evaluate the findings. To modify the traditional heuristic evaluation method of assessing software usability so that it can be applied to medical devices and used to evaluate the patient safety of those devices through the identification and assessment of usability problems. In this chapter, we explain how to extract the data from your results, analyze it, and turn it into an action plan for improving your site. One of the most important things to look at in the hyperlinks to the full usability reports is the sus or system usability scale. To this day, the system usability scale is still used to evaluate the usability of software or websites, as the tool can be implemented quickly and easily. It consists of a 10 item questionnaire with five response options for respondents. The system usability scale, or sus, was created in 1986 by john brooke and has.
Usability evaluation methods assessing the usability of a product with the purpose of identifying usability problems andor obtaining usability measures. In fact, just four items can accurately predict the system usability scale. Providing an assessment tool to determine the ease and usability of your website and technological apps, lets break down sus data and how to use it. This analyticalempirical study was performed in 2014. An empirical evaluation of the system usability scale.
93 258 1336 730 1196 1243 689 812 370 918 687 1331 839 625 767 327 315 283 1065 1395 147 954 298 96 1056 161 165 409 393 306 142 20 361