A black contrasting border is used to separate the yellow circle from its background because both have similar luminance.

Motion is extremely powerful in generating an orienting response.

It is also a common mistake for the slide to contain a set of section “bullets” listing the main points. Generally these belong in the speaker’s notes, not on the screen. They also have the effect of weakening narrative tension because the viewer will look ahead and reason about the conclusion bullet long before the speaker gets there.

One method for triggering further exploratory cognitive activity is by creating a strong gist-object conflict.

designing for narrative is very different from designing for information seeking.

if you wish to make several things easily searchable at the same time? The solution is to use different channels.

for certain combinations of targets and distracters the time to respond did not depend on the number of distracters.

Visual distinctness has as much to do with the visual characteristics of the environment of an object as the characteristics of the object itself.

and this allows for a hierarchical search strategy.