Attention
Activated by top-down and bottom-up
limitied
multimodal
tightly linked to memory
tightly linked to eye/head movements
Driven by external world: stimuli, colour, movement
Bottom up
Driven by expectatiions, anticipation, motivations
top down
goal driven
Design
information layout and entry forms
attract attention where necessary
reinforce messages
Divided attention
There is a limit on concurrent activities
dependent on noise, stress, work-load
task difficulty, complexity
Multimodality
Dual-tasking is possible if using different modalities
Automaticaity
carried out without awareness