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Decision-making and Motor Behavior. Input. Central Processing. Output. Welford’s (1976) Hypothetical Model of Information Processing. From: Welford, A.T. (1976) Skilled Performance: Perceptual and Motor Skills . Scott, Foresman and Company: Palo Alto, CA. What is the decision process?.

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slide2

Input

Central Processing

Output

welford s 1976 hypothetical model of information processing
Welford’s (1976) Hypothetical Model of Information Processing

From: Welford, A.T. (1976) Skilled Performance: Perceptual and Motor Skills. Scott, Foresman and Company: Palo Alto, CA.

what is the decision process
What is the decision process?
  • In the decision process performers develop a plan or strategy for the movement.
what does reaction time measure
What does reaction time measure?
  • Afferent flow of information
  • Processing of information by the brain
  • Efferent flow of information
fractionated reaction time
Fractionated Reaction Time
  • Premotor Reaction Time
  • Motor Reaction Time
  • Total Reaction Time
slide7

From Magill, R.A. (2007). Motor Learning and Control: Concepts and Applications (8th ed.). McGraw Hill: New York, pp 183.

define
Define
  • Simple Reaction Time
  • Choice Reaction Time
memory drum theory
Memory Drum Theory
  • Franklin Henry provided the Memory Drum Theory
    • Fischman, Christina, and Anson
    • Klapp
    • Hide’s thesis
what is information and how is information measured
What is information and how is information measured?
  • Limited capacity of the decision process
  • Single channel processing
  • Bottleneck in the system
uncertainty
Uncertainty
  • Number of possible alternatives (CRT)
    • Number of stimuli
    • Vary the probability of occurrence
    • Sequential dependencies
  • Predictability
    • Temporal uncertainty
    • Spatial uncertainty
    • Event uncertainty
    • Perceptual uncertainty
slide13
BITS
  • BITS measures the complexity and uncertainty of information
  • Calculation of BITS
perceptual discrimination
Perceptual Discrimination
  • Just Noticeable Difference
    • Being able to detect differences in stimuli if they in fact exist

http://www.nytimes.com/2010/07/04/magazine/04Rivera-t.html?_r=1

psychological refractory period the fake
Psychological Refractory Period (The Fake)
  • The psychological refractory period is created when two signals are presented in succession
  • It’s the time it takes to respond to a fake and realize it is a fake when the real move is recognized and the performer has to initiate a new response
slide16

From Magill, R.A. (2007). Motor Learning and Control: Concepts and Applications (8th ed.). McGraw Hill: New York.

facts about the psychological refractory period
Facts about the Psychological Refractory Period
  • RT to the first signal is the same as when stimulus 1 is presented alone
  • RT to the second signal is almost always longer
  • If the interstimulus interval (ISI) is less than 100 msec sometimes the performer responds to only one signal
  • Practice will not improve the psychological refractory period
  • The psychological refractory period can be eliminated if the performer knows where stimulus 2 will occur
  • The psychological refractory period is a central phenomenon. It is not sensory or motor.
activity groups
Activity Groups
  • Temporal Uncertainty
  • Event Uncertainty
  • Perceptual Uncertainty
  • Spatial Uncertainty
  • Define the concept and provide a minimum of 3 examples of movement exemplars of these ideas