Heuristic Evaluation
A heuristic evaluation ****is a method for identifying design problems in a user interface. Evaluators judge the design against a set of guidelines (called heuristics) that make systems easy to use.
The 10 Heuristics for UX Design
- Visibility of system status: The design should always keep users informed about what is going on, through appropriate feedback within a reasonable time.
- Match between system and the real world: The design should speak the users' language, with words, phrases and concepts familiar to the user, rather than system-oriented terms.
- User control and freedom: Users often choose system functions by mistake and will need a clearly marked "emergency exit" to leave the unwanted state without having to go through an extended dialogue.
- Consistency and standards: Users should not have to wonder whether different words, situations, or actions mean the same thing.
- Error prevention: Even better than good error messages is a careful design which prevents a problem from occurring in the first place.
- Recognition rather than recall: Make objects, actions, and options visible. The user should not have to remember information from one part of the dialogue to another.
- Flexibility and efficiency of use: Accelerators — unseen by the novice user — may often speed up the interaction for the expert user to such an extent that the system can cater to both inexperienced and experienced users.
- Aesthetic and minimalist design: Dialogues should not contain information which is irrelevant or rarely needed.
- Help users recognize, diagnose, and recover from errors: Error messages should be expressed in plain language (no codes), precisely indicate the problem, and constructively suggest a solution.
- 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. Any such information should be easy to search, focused on the user's task, list concrete steps to be carried out, and not be too large.
