Whatterz


Jakob Nielsen's Ten Usability Heuristics

by Simon. Average Reading Time: about 2 minutes.

These are ten general principles for user interface design suggested by Jakob Nielsen. They are called heuristics because they are more in the nature of rules of thumb than specific usability guidelines.

  1. Visibility of system status — The system should always keep users informed about what is going on, through appropriate feedback within reasonable time.
  2. Match between system and the real world — The system should speak the users’ language, with words, phrases and concepts familiar to the user, rather than system-oriented terms. Follow real-world conventions, making information appear in a natural and logical order.
  3. 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. Support undo and redo.
  4. Consistency and standards — Users should not have to wonder whether different words, situations, or actions mean the same thing. Follow platform conventions.
  5. Error prevention — Even better than good error messages is a careful design which prevents a problem from occurring in the first place. Either eliminate error-prone conditions or check for them and present users with a confirmation option before they commit to the action.
  6. Recognition rather than recall — Minimise the user’s memory load by making objects, actions, and options visible. The user should not have to remember information from one part of the dialogue to another. Instructions for use of the system should be visible or easily retrievable whenever appropriate.
  7. Flexibility and efficiency of use — Accelerators — unseen by the novice user — may often speed up the interaction for the expert user such that the system can cater to both inexperienced and experienced users. Allow users to tailor frequent actions.
  8. Aesthetic and minimalist design — Dialogues should not contain information which is irrelevant or rarely needed. Every extra unit of information in a dialogue competes with the relevant units of information and diminishes their relative visibility.
  9. Help users recognise, diagnose, and recover from errors — Error messages should be expressed in plain language (no codes), precisely indicate the problem, and constructively suggest a solution.
  10. 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.

References

This article has been tagged

, , , , , , , , ,

Other articles I recommend

Shneirderman’s 8 Golden Rules of Interface Design

To improve the usability of an application it is important to have a well designed interface. Shneiderman’s “Eight Golden Rules of Interface Design” are a guide to good interaction design.

Lund's Expert Ratings of Usability Maxims

Published in the “Ergonomics in Design” journal in 1997, Arnie Lund collected and created this list of 34 rules-of-thumb that were found particularly useful during the design process by colleagues working in the human-computer interaction (HCI) design field.

Hansen’s User Engineering Principles for Interactive Systems

The ‘feel’ of an interactive system can be compared to the impressions generated by a piece of music. Both can only be experienced over a period of time. With either, the user must abstract the structure of the system from a sequence of details. Each may have a quality of ‘naturalness’ because successive actions follow a logically self-consistent pattern. A good composer can write a new pattern which will seem, after a few listenings, to be so natural the observer wonders why it was never done before.

  • I created a High Resolution design with these 10 heuristics. I’ve set it as my desktop background for reference. You can download it from here for free: http://www.meetal.co.za/wp-content/uploads/2012/01/Nielsons-10-Usability-Heuristics.jpg