Salience - contrast – especially motion or color contrastNewness – abrupt onset, appearance of something new on the sceneAttentional set – if person is searching for it or is otherwise prepared to let it grab attention
If a channel has a high event rate, people will sample that more frequently than if it had a low event rate – something that is frequently updated gets visual visits more often than something that is static or updates more slowly – think car gauges, we sample spedometer more often than engine temperature.Contextual relevance – the context of events that have happened there previously suggest that information is now available there. There is a cue that there is information there – usually an alarm or indication.Info value – the expected value to be gained, or lost, if the info is not noticed
FieldStructured Predictable Haphazard In which type of field is it easier to find a target?
Facilitating Visual SearchHow can we design interfacesso it’s easier for people to find what they need?
A target is easier to find if… It is salient. It is novel or unfamiliar among familiar items. It possesses a unique feature rather than lacking it.* It (not the distractors) deviates from a default value.* Only one target needs to be sought at a time.