Effects of Task Intensity on Attention
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Transcript of Effects of Task Intensity on Attention
Daisuke AbeCorey Christous
Advisor - Emmanuel AguCo-Advisor - Cliff Lindsay
Effects of Task Intensity on Attention
CS MQP 2008
HypothesisAs a task becomes more difficult, the user
performing the task will notice less unrelated objects that they see.
Users with more expertise will notice more objects, because they require less attention on their task.
If we are able to show this, our results can be used to increase the efficiency of graphics rendering by eliminating details that are likely to be unnoticed.
Alternatively, our results can be used to judge what level of task intensity is appropriate when game designers want the players to appreciate the graphics.
BackgroundSaliency – the property of an object to stand out in
comparison to its surroundingsAttention Based Saliency – the property of an
object to stand out because of its inherent contrast to its surroundings
Task Based Saliency – the property of an object to stand out because it is related to the task at hand
If our hypothesis is correct, task based saliency would dominate attention based saliency as the task becomes more difficult.Players would only notice objects that are related to
their task.
Experiment DesignDesigned a Doom 3 map with ten pick-up items, a few
objects consistent with the environment, and a few objects inconsistent with the environment including images of famous figures
Varied the task difficulty by having one map without monsters (easy), one map with slow monsters(medium), and one map with fast monsters(hard)
Asked participants to answer a few questions about themselves, including gaming experience
Asked participants to collect all of the items as fast as they could, avoiding enemiesPlaced objects such that participants would see almost all
of them regardless of what route they tookRandomly assigned participants to each of the mapsAsked participants to list the objects they saw in the
map
Data Analysis:Pictures Seen vs Self-Rating graphsPlayers who thought they
were more proficient at first person shooting games noticed more pictures in the map
Self rating was accurate
While we saw some trends, our results are not statistically significant. However, we believe that increasing the difficulty differences will produce statistically significant results.
Data AnalysisExperienced players ignored objects that were
natural in the map because of previous experienceMost objects the player sees in a FPS don’t do
anythingInexperienced players looked at everythingParticipants who spent more time in the map
noticed more objectsMore experienced players noticed more
images in the mapThe players’ skill level affected perceived
difficulty for the map
ConclusionsTask intensity had an effect on
performance and visual attentionSkill levels had an effect on perceived task
intensityLong term experience has more impact
than current hours spentSome participants used to play FPS games
but stopped playingQuestion about hours played might have
produced inaccurate results
Suggestions for the FutureA thorough pre-experimental test to more
accurately group participants into appropriate skill levels
Increase the difference in the difficulty levels in order to see statistically significant differences
Try other genres