The interface will provide additional assistance as needed or requested. Follow real-world conventions, making information appear in a natural and logical order. Help and documentation Even though it is better if the system can be used without documentation, it may be necessary to provide help and documentation.
The freedom to undo any accidental actions. In the below example, I have entered a fictitious username and password and the error message I got is either the username or the password is incorrect. Heuristic evaluations are one of the most informal methods  of usability inspection in the field of human—computer interaction.
The user should not have to remember information from one part of the dialogue to another. The system should always keep users informed about what is going on, through appropriate feedback within reasonable time.
Match between system and the real world: One methodology consists of shipping cameras and special camera holding fixtures to dedicated testers, and having them record the screens of the mobile smart-phone or tablet device, usually using an HD camera.
The system should speak the users' language, with words, phrases and concepts familiar to the user, rather than system-oriented terms. Allow users to tailor frequent actions.
Although the data collected is subjective, it provides valuable information on what the user wants. It is the most popular of the usability inspection methods, as it is quick, cheap, and easy.
Used in the product definition stage, a group of 6 to 10 users are gathered to discuss what they desire in a product. The user should not have to remember information from one part of the dialogue to another.
This type of evaluation is very powerful for determining the usability of a device because it combines multiple studies to provide very accurate quantitative support.
Interfaces need to be cleared of unnecessary elements and content that do not support the page goals and tasks. Activity Analysis Activity analysis is a usability method used in preliminary stages of development to get a sense of situation.
This usability inspection method does not require user testing which can be burdensome due to the need for users, a place to test them and a payment for their time. In particular, the benefits fall into several common areas: Heuristic evaluation requires only one expert, reducing the complexity and expended time for evaluation.
The list is slightly too long for heuristic evaluation but serves as a useful checklist. To encourage co-operative problem-solving between the two subjects, and the attendant discussions leading to it, the tests can be designed to make the subjects dependent on each other by assigning them complementary areas of responsibility e.
Participants review items from a Web site and then group these items into categories. As the designs become more complex, the testing must become more formalized.
Nielsen developed the heuristics based on work together with Rolf Molich in Four key characteristics are considered when establishing a benchmark: These types of studies are useful for validating suspected usability issues.
Help users recognize, diagnose, and recover from errors: The user should not have to remember information from one part of the dialogue to another.
Read full article on preventing user errors. This is a very common method and often does not appear to be a survey, but just a warranty card.
Additionally, it can provide insight into the user's attitude, which can not usually be discerned from a survey or questionnaire.
Web Usability 2 Summary: Support undo and redo. Users should not have to wonder whether different words, situations, or actions mean the same thing.
Consistency is the key.
The interface will have an attractive and appropriate design. A heuristic evaluation is a usability inspection method mainly used to identify any design issues associated with the user interface. Jakob Nielsen’s heuristics.
What is Website Usability? - Definition from Techopedia.
Usability is the ease of use and learnability of a human-made object such as a tool or device. In software engineering, usability is the degree to which a software can be used by specified consumers to achieve quantified objectives with effectiveness, efficiency, and satisfaction in a quantified context of use.
The object of use can be a software application, website, book, tool, machine. In a heuristic evaluation, usability experts review your site’s interface and compare it against accepted usability principles. The analysis results in a. Dec 31, · Summary: Jakob Nielsen's 10 general principles for interaction design.
They are called "heuristics" because they are broad rules of thumb and not specific usability guidelines. Visibility of system status.
The system should always keep users informed about what is going on, through appropriate feedback within reasonable time. Bake UX into your workflow by following a proven, user centred design framework based on the usability standard, ISO Prepare for the BCS Foundation Certificate in User Experience.Usability heuristics