This section provides links to various charts illustrating basic concepts in usability assurance.

• Human factors ... - a chart illustrating the mental properties and their effects on the human behavior
• Confusion ... - a chart illustrating that circumstances of operational errors
• Distraction ... - a chart illustrating the effect of distraction on the mapping from intention to action
• Look and feel ... - a chart illustrating that the look and feel of the interface to a feature should depend on the frequency of the operator's access to this feature. Two charts (All at once ..., Drill down ...)depict the way how the look and feel should depend on the frequency of access to the feature.
• Two charts (Mode selector ..., Slip-proofing ...) illustrating ways to design slip-proof mode selectors.
• Problem solving ... - a model illustrating the sequence of the operator's mental activities when facing an alarm.

Updated on 17 Apr 2017.