Dr. Emily H. Wughalter
Sean White in February 2010 Olympics
http://www.faniq.com/video/Shaun-White-Olympic-GoldRun-YouTube-119,6,25687/user_recent
A model of information processing
Input
Stimulus
Identification
Response
Selection
Response
Programming
Output

Reaction time is the measure of input and
central processes or until the beginnings of overt
movement
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Types of Reaction Time Defined
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Simple Reaction Time
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Choice Reaction Time
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Discrimination Reaction Time
Stimulus Clarity – Sharpness, Focus
Stimulus Clarity - Focus
Stimulus Intensity - Brightness, Loudness
Stimulus Intensity - Brightness, Loudness
Peripheral Vision
High
Performance
Low
Low
High
Arousal
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Inter and intra-individual differences
Meaningfulness
Complexity
Variation
Uncertainty
Intensity
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Detection
Comparison
Recognition
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Information comparison is measured in a
paradigm where two intensities from the same
source are present for a time period long
enough to detect the information
Just Noticeable Difference (JND) means the least
amount of difference required to report the
difference in stimuli and be correct at least 50
percent of the time.

Absolute judgment is the extent to which a
participant is capable of matching a stimulus in
the environment to one already stored in
memory.
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Space:
7+2 items
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Time:
20 - 60 seconds
How is detection of information explained in
motor behavior?
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Low activation system information is lost
High activation system too much noise and information is lost
Uncertainty – speed
Noise – poor quality or ambiguity
Arousal
Standard
Error Detector
Movement
Organizer
Movement
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What is selective attention?

Selective attention means paying attention to those
regulatory aspects of the environment.
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Cocktail Party Phenomenon
Meaningfulness
Pertinence
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Enduring Dispositions
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“rules of involuntary attention”
Momentary Intentions
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Attention to things where instruction leads us to pay
attention