Human Cognitive Processes!

• Attention
  Making information present when you need it and easy to find, avoiding clutter
  
  
• Perception
  Making information and graphics legible, appropriate and easy to understand, grouping information properly
  
  
• Memory
  Not overloading users with complicated procedures, promoting recognition using images, icons, and consistency
  
  
• Learning
  Encouraging exploration, guiding the users to select appropriate actions
  
  
• Problem solving
  Supporting choosing different options, comparing trade-offs, and discovering other ideas.