This document provides an overview of the usability evaluation of an interactive system. It covers the interactive system and its users, use cases, usability requirements, and evaluation methodology. The document also discusses the findings of the evaluation.
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Running head:USABILITY EVALUATION OF INTERACTIVE SYSTEM Usability Evaluation of Interactive System Name of the Student Name of the University Author’s note:
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1USABILITY EVALUATION OF INTERACTIVE SYSTEM Table of Contents Part ONE: The Interactive System and Its Users.............................................................................2 Part TWO: The Use Cases...............................................................................................................3 Part THREE: The Usability Requirements......................................................................................4 Part FOUR: The Evaluation Methodology......................................................................................5 Part FIVE: The Evaluation..............................................................................................................8 Part SIX: The Findings of the Evaluation......................................................................................15 Bibliography:.................................................................................................................................17
2USABILITY EVALUATION OF INTERACTIVE SYSTEM Part ONE: The Interactive System and Its Users The selected interactive system is an online web application that allows the customers to buy clothing and fashion products. The name of the interactive system isMissguided (Women ClothingWebsite).Theinteractivesystemisanonlineretailwebsite.Thesystemhas authorization and authentication functions. The system is developed on web 2.0 technologies. It has a menu that allows the user to navigate through the system freely. The account is also available for registered users. After registering into the system, the user can use the provided login credentials to login to their account. The account holds all the purchasing and short listed products. During the registration, the system stores the email address of the user. The system uses this email address for promoting products and informing user about the availability of the products. The system has an interface for the administrators so that they can adjust contents of the system and make desired changes. The user can add products to wish list if not available currently. The purchasing of product is also very easy because the system has a cart that manages all the products in a single order. The user of the system are customer, admin and service provider. The system will be hugely by the customers. They have the biggest interest on the system. Every purchase they make from the owner organization has to be made through this system. The admin are in the middle of customer and service provider in terms of interest and power over the system. They admin can make changes in the system appearance, working and many other things. The service provider remains the most powerful user as they control the system. They can update, install patch, change resources and do every other possible things mentioned in SLA that can affect the system processing.
3USABILITY EVALUATION OF INTERACTIVE SYSTEM Part TWO: The Use Cases Figure 1: Use Case Diagram of Missguided Interactive System (Source: Created by Author) Login:The actor of this use case is Registered Customer. The actor provides stored login credentials to the login form to log into the system. Register:The actor of this use case is New Customer. The actor enter all the personal details into the registration form. The exception can be that provided email id is blocked.
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4USABILITY EVALUATION OF INTERACTIVE SYSTEM Place Order:Any of the web customers can place an order. This use case is related to add product to cart use case. The exception can be that selected product cannot be delivered to specified location. Manage Product:The admin is the actor of this use case. The actor can add, delete and update the product details. The actor can also manage stock related to a product. Manage Content:The administrators can manage the contents like text, posts, images and other elements present in the pages. They have the authority to update style and theme of the system. Update System:The service provider can update the system. This actor can add modules to the system or update its working procedure. Part THREE: The Usability Requirements Learnability:This refers to the capacity of the system, how easily the functions can be presented to the users. The users should be able to understand how to use the system very efficiently. The system must provide hints about how to operate its functions or what button does what job. The learnability can also be effectively used by showing the outcome of clicking different buttons or links. Performance:In terms of Web applications, the performance is a very crucial usability requirement. In this era, the competition of online retail is extremely high and a system without high performance capability cannot be a choice of the customers. The performance of the system will affect the user experience. The performance also denotes that how easily the customer can execute a specific task.
5USABILITY EVALUATION OF INTERACTIVE SYSTEM Availability and Accessibility:These types of interactive systems must be available to the users 24*7. The user can try to connect to the system anytime from anywhere. The designers also has to be concern about the fact that persons with different disabilities will use the system. The system should be loaded into the user device with medium internet connection. The online stores are mostly used through the phones and mobile networks does not provide strong connection like broadband. Good Navigation:The users of the system should be able to freely navigate throughout the system without being three clicks away from whatever they wish to access. The three clicks technique is a very critical solution to complex and big website navigation. The main menu must have links to product categories and sub categories. Undo:It is common for the users to select products and execute a task that they do not want. The system must provide them the opportunity to rollback to previous state. Taken as an example, a customer may want to remove a product from the cart or admin wants to delete a product that they have mistakenly added. Part FOUR: The Evaluation Methodology The usability evaluation will be done based on ten usability heuristics. These ten heuristics will be examined by monitoring the user activities in the system. Few participants will be employed in this evaluation process. Each user will be given specific tasks that they will carry out. The user experience can be considered as the qualitative metric that can have impact on many human interaction factors. The continuous improvement in the human computer interaction is allowing organizations to provide great user experience. However, checking the impact of the developed product is always a factor in system development. In order to check the usability of
6USABILITY EVALUATION OF INTERACTIVE SYSTEM the system interface the heuristic evaluation method has been selected. This method will be carried out based on ten guidelines. Each guideline has to be carried out by the participants and tasks for following the guidelines will be discussed with them. GuidelineDescriptionUser Task Visibility of System Status This guideline refers to the response of the system basedontheuseractivity.Thatmeans,system should react to user action within minimal time through colour changing, animation, loader or any other way. Purchase Product Connection between therealworldand the system The system may have some contents of functions that user may not be familiar with. This issue can be overcome because, a user can get accustomed with thesystemafterafewdaysofinteractions. However, it is significant for the system to speak in the language of the system user. Newsletter Registration UserControland Freedom This guideline is all about providing the freedom to the user to perform actions and navigate through the system. The user will have complete control over the actions they make. Adding product to cart and wish list Consistencyand Standards Consistency is a significant factor in system design to make the user learn about the system fast. The buttons for same purpose must look and feel same in every page in the system. Moreover, the system Accessingthe contentofthe system
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7USABILITY EVALUATION OF INTERACTIVE SYSTEM must show a particular type of data in the same fashion in every page. Error PreventionThe error prevention informs the user when he/she is about to make a mistake. This is very important for increasing the user experience. It is because, the users will be highly satisfied if the system informs them what mistake they are making and prevent it from doing. Password confirmation, purchase product Recognitionrather than recall This guideline is based on giving suggestions to the users rather than asking him to remember the whole thing. The aim of this guideline is minimizing the usage of the user memory. The system remembers thesetofoptionsuserhavepickedandshow contents and products based on that. Purchasing sametypeof product Efficientand Flexibleusageof system The user interface of the user should always be flexible so that it can convert itself according to the experience of the user such as novice to expert user. This allows the advance user to select more complex and controlled procedure and novice expert select more straight forward approach. Shoppingwith advanced optionsand shoppingwith normal options. Aestheticand minimalist design Akeyroleplayerofthisguidelineisthe prioritization. In this guideline only the necessary and useful contents are displayed in the pages. This Checkpage texts,functions and media
8USABILITY EVALUATION OF INTERACTIVE SYSTEM guideline assigns priority to the contents of every page. The top priority contents are only allowed to be shown in the pages. Assist users identify, evaluate and recover from errors A user cannot prevent him/herself from making an error while using a system. For this reason, the system must implement a check option so that errors canbeproperlyexplainedtotheuser.The explanation should be simple words so that every user can understand it. Entering wrong passwordor emailinthe login page Addingsame product twice in the cart Assistand Documentation Notalltheusershaveexperienceofaccessing similar system. A very good user interface allows the user to navigate through its pages and features without any training or documentation. If a user is not able to make it out then required assistance should be provided. Checking every possible navigation pattern Part FIVE: The Evaluation GuidelineEvaluation Visibility of System Status The users are asked to add the products to the cart first. After the participants have added the products to the cart, then the system update the cart details. ‘view bag/pay securely’ option is available in the cart
9USABILITY EVALUATION OF INTERACTIVE SYSTEM of the system. After the user clicks on this link following page appears. This page shows the status of the order. As per this image, the status shows that bag or cart has been filled with a product. The user can update the cart by adding new product, change amount or other way. Once the delivery details are filled, the delivery option will be ticked. This way the system provides proper status of the order every time a user try to make purchase. Connection between therealworldand the system The target users of the system are new generation and stylish people of the society. The system targets the college student and working women. These users like to see funky and cool texts that will attract their mind. The system cloud have just used ‘register for newsletter’ for asking the user to register for newsletter.
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10USABILITY EVALUATION OF INTERACTIVE SYSTEM Instead the system used the keyword ‘treat your inbox’. This text is eye catchy and out of the box. This will surely get interest of the users in the first place. Moreover, the system provides a brief description of the purpose of this function just below the ‘treat your inbox’ text. A link is also provided so that user can gather proper and detailed knowledge about this function. UserControland Freedom The participants are asked to add and remove products to and from the cart respectively. The process to add and remove products to and from the wish list respectively is also done under this guideline. They are asked to add different products to the cart and wish list. The system allows the user to add products to the cart without logging into the system. However, it does not permit adding product to wish list without logging in. The user has the ability to remove products from the cart so that they can have full control over the purchase they want to make. A product can either be added to wish list or removed from it. Consistencyand Standards In order to check the consistency of the system, the participants are asked to check product pages of different products, different unpopular pages and pages linked to the footer. The system has same unique text
11USABILITY EVALUATION OF INTERACTIVE SYSTEM patterns throughout the website. The colours are limited to the white, pink and blue. The text the presentation of the products is also similar. Therefore, the system has followed consistency in terms of contents and media. Error PreventionThe participants are asked to register into the system. Unlike the conventional approach, the web application did not have any link to login/register page in the header. The login/register option is available in the account section of the main menu. The users are asked to enter wrong data into the fields. As a result, the system displayed status of the registration. The above image denotes that the entered details are wrong and user cannot register to the system using these data. The system shows the user exactly what error they have made and how to prevent those errors. Recognitionrather than recall The user is asked to make purchase based on what kind of dresses they like. The system did not provide any specific option to select the
12USABILITY EVALUATION OF INTERACTIVE SYSTEM favourite dresses or clothing style. However, the search bar is advanced enough to categorize the keyword in different aspects and provide the suitable results to the customer. The search bar shows the suggestions based on what the customer wants to purchase. Efficientand Flexibleusageof system Two participants are asked to carry out this guideline. One participant is an expert in accessing these kinds of system and the other one has limited idea. The novice user has only accessed the major e-commerce web application once or twice. The advance user did not have any issue in accessing the website. However, the novice user had many issues. The novice user could not find the main menu as it was hidden in the top-left bar. The link to login was not available in the header. The website does not provide much details of the products they sell. The navigation is also very different and complex. AestheticandThe users are asked to read all the contents that they find in the page
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13USABILITY EVALUATION OF INTERACTIVE SYSTEM minimalist designand decide whether these data are helping them or not. The first page is the home page where one slideshow and three categories of products are available. As per the users, these data are not enough to attract them. Instead of putting relevant data, the home page has very less amount of data. The home page does not also provide a good idea about what kind of cloths this system promotes. Moreover, in every product list page there is a line texts that does not have any impact on the users. This line is not required in any page. Assist users identify, evaluate and recover from errors The participants are asked to login to the system using wrong login id and password. The system checked and respond to this unauthorized access in a very good way.
14USABILITY EVALUATION OF INTERACTIVE SYSTEM Moreover, one product is asked to add to cart for more than once so that this guideline can be properly tested. Assistand Documentation The system does not follow all the conventional approaches of system design. Some functions are hard to understand. The system also prevent users from doing specific actions without giving any idea of the reason. Such as adding same product to cart. This product is available but whenever, the user try add the product to the cart when it is already added, this dialogue appears on screen.
15USABILITY EVALUATION OF INTERACTIVE SYSTEM Part SIX: The Findings of the Evaluation Visibility of System Status:The system status is as effective as desired. The status shows the progress of the order step by step. The status also checks the procedures has been completed. The check is also removed if a process is rolled back. The finding strongly related to the results of evaluation process. Connection between the real world and the system:The system has presented few sections where the system is related to the outside world. The result of the evaluation is not strongly connected to the findings. The system does not provide any buy now option. For this reason, the user have to go through the cart every time making the purchase, even if only product is to be purchased. User Control and Freedom:The system provide enough freedom and user control in terms of accessing the system. The finding of the evaluation has a good connection with the result of the evaluation process. The finding states that user can go back and forth to conduct a process and roll back it. Consistency and Standards:The system has consistency in terms of colour, media representation and style. The user can easily understand that same system is open by accessing any page. The colour combination is same in each page. The result of the evaluation process is strongly connected to the findings. Error Prevention:The result of error prevention guideline usability evaluation process is as expected. The findings entails that system will prevent the user to make error. The system provides status when an error is made.
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16USABILITY EVALUATION OF INTERACTIVE SYSTEM Recognition rather than recall:The findings are loosely connected to the result of usability evaluation. The search bar is advanced enough to categorize the keyword in different aspects and provide the suitable results to the customer. The search bar shows the suggestions based on what the customer wants to purchase. Efficient and Flexible usage of system:The expected result of the evaluation is easy navigation throughout the system. The evaluation finding does not match with the actual outcome of the evaluation.The link to login was not available in the header. The website does not provide much details of the products they sell.
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