Attention has several components:
- selective attention – focussing on a particular stimulus
- divided attention – focussing on two or more stimuli at a time
- alternating attention – switching focus from one stimuli to another
- sustained attention – attending for a long period of time and resistance to distractions
Attention deficits usually manifest as problems with concentration, task focus and work organisation.
In many definitions and theories of brain function, attention overlaps with some of the executive functions. In order to distinguish these domains for diagnostic purposes in FASD, attention has been defined separately.