The rationale of this approach is to include the most important ergonomic criteria, usability principles, and heuristics into a hierarchical organization, which makes it easier to be understood, learned, and used by both designers and evaluators.
By Costin Pribeanu.
General ergonomic criterion that concerns the means to inform, orient, and guide the users throughout the interaction with the computer. Suitable user guidance has positive effects on the ease of use.
Guide users towards making specific actions.
Provide appropriate feedback as a response to user’s actions within reasonable time.
Provide a clear structure of the application.
Provide means to group similar objects and distinguish between different classes of objects.
Physical, perceptual, and cognitive effort needed to learn how to use the system and the effort needed to use it effectively. Reducing the user’s effort has positive effects on the learnability and efficiency of use.
Provide similar meanings and design choices in similar contexts.
Provide means to the users’ perceptual and cognitive load.
Minimize the number of actions needed to accomplish a task’ goal.
The means available to adapt and control the system as well as to use it in a flexible way. The control and freedom have positive effects on the efficiency of use.
Ensure that only actions requested by the users are processed and only when these are requested.
Provide the means to initiate and control the system processing.
Provide means to customize the interface and select the preferred way to accomplish a goal.
Support for using the system, including specific accessibility requirements for the users with special needs.
Provide means to match the users’ characteristics with the characteristics of the user interface.
Provide the user with the procedure and associated support (forms, documents, etc.) needed to perform specific tasks.
Provide means to prevent, diagnose, correct, and recover from errors
Provide online help and documentation.