View source for Inattentional blindness

== Classifying a failure of awareness as inattentional blindness ==
All of the following criteria must hold to classify a failure of awareness as inattentional blindness as opposed to a different type of failure of awareness.  Note that not all failures of awareness that result from distraction or inattention to a stimulus constitute inattentional blindness.  
* Observers fail to notice a visual object or event
* The object or event is fully-visible and observers readily see it if they are looking for it
* The failure to notice results from engagement of attention on other aspects of the display and not from aspects of the visual stimulus itself
* The object or event is unexpected