Do I know what the system is doing?
Do I know why I have to wait?
Is the process running in the background or foreground?
Do I know how much longer I will have to wait for a result?
Do I know how far along the process is?
Can I see how many steps are left in a process I am working on?
Do I know what is coming next?
When users know the current system status, they learn the outcome of their prior interactions and determine next steps. Predictable interactions create trust in the product as well as the brand.
Does the UI use terms based on users’ language for the task?
Are meaningful icons and/or abbreviations used?
Does information appear in a natural order?
Does the order that information is accessed match user expectations?
Skeuomorphism describes interface objects that mimic their real-world counterparts in how they appear and/or how the user can interact with them. EG: the recycle bin icon used for discarding files.
When a design’s controls follow real-world conventions and correspond to desired outcomes (called natural mapping), it’s easier for users to learn and remember how the interface works. This helps to build an experience that feels intuitive.
Are users offered easy ways out of as many situations as possible?
Are there clearly marked ‘emergency exits’ for users to leave unwanted situations without having to go through several stages?
Support for undo and redo, e.g. Ctrl-Z & Ctrl-Y
Cancel button (for dialogue boxes waiting for user input)
Universal undo (can go back to the previous state)
Interrupt (especially for lengthy operations), e.g. Home button, “ESC” key
Quit (for leaving the program at any time)
Defaults (for restoring a previous state)
When it's easy for people to back out of a process or undo an action, it fosters a sense of freedom and confidence. Exits allow users to remain in control of the system and avoid getting stuck and feeling frustrated.
When thinking about, designing for or analysing for consistency, ask yourself, is the product consistent:
Within itself?
With earlier versions of the product?
In its use of metaphors?
With people's expectations?
List the standards you can identify in the UI.
What makes them consistent?
Try to describe why?
Failing to maintain consistency may increase the users' cognitive load by forcing them to learn something new.
Do dialogue boxes pop up to ask for confirmation of interactions which have an impact, like deleting?
Does it prevent the user from choosing interactions that are wrong in a certain situation, e.g. by greying out?
Does the UI prevent choices that could be wrong for the user task (e.g. dates in the past, double booking or purchasing...)
Our attention is as limited as our tolerance for stuff that doesn’t work. Most people who run into errors on our apps just move on to something else.
Error prevention can help enable lower rates of user errors, and ultimately improve usability.
Does the website's menu help you find the destination for your task easily?
Does the website provide clear hints to choose appropriate functions?
Does the UI help you remember the steps of your tasks, and your progress within the task?
Does the UI use standard elements that make it easy to find your way?
Humans have limited short-term memories. Interfaces that promote recognition reduce the amount of cognitive effort required from users.
Can a user speed up tasks with shortcut functions?
Can an advanced user skip elements to speed up a task?
Does the user interface use predictive text or search?
Does the user interface show recently used functionality or files for quick access?
Does the website use brief, clear language?
Is the layout uncluttered and does it use white space?
Does it use icons where possible?
Do all elements have a purpose on the page or in the dialogue?
Does the website use a simple colour scheme?
Are error messages constructive?
Are error messages consistent in grammar, form, terminology, and abbreviations?
Do error messages blame the system, or the user?
Do error messages inform on the severity of the error?
Do error messages indicate actions users need to take to correct the error?
Does the system guide users to the place where the error occurred?
Can the user consult more extensive documentation?
Is a help function always available, on each screen?
Do functions and fields have specific help content?
Is the help function easily searchable?
Is the help content aligned to the user tasks, e.g. by using verbs?