Human beings vary psychologically in complex ways. Any attempt by designers to classify people into groups merely results in a statement of broad principles that may or may not be relevant to the individual. Design permeates every aspect of human experience and data pertaining to what cannot be seen such as touch, taste, and smell are often expressions of opinion rather than checkable fact.

• Psychological factor data

• Human information processing systems

• Effect of environmental factors

• Alertness

• Perception

• Data in relation to light, smell, sound, taste, temperature and texture as qualitative or quantitative (ordinal/interval)

• Methods of collecting psychological factor data

• Representing the human information processing system using flow diagrams

• Applying the human information processing system to a common task

• Evaluating effects and reasons for a breakdown in the human information processing system

• User responses to environmental factors

• How environmental factors induce different levels of alertness

• The importance of optimizing environmental factors to maximize workplace performance

• Assessing the impact of perception in relation to the accuracy and reliability of psychological factor data

The analysis of the human information processing system requires you as a designer to critically analyse a range of causes and effects to identify where a potential breakdown could occur and the effect it may have