Chapter 2 Action Preparation

Chapter 2 Action Preparation - Action Preparation Chapter 8...

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Action Preparation Chapter 8 If actions self-organize, is there a need to prepare them?
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Information-Processing Approach A computer analogy is often used to explain the concept of information processing. Input information processing response output
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Three Stages of Information Processing 1. Stimulus Identification Make some representation of the stimulus: object or movement pattern 2. Response Selection Decide on response 3. Response Programming Preparing the action (typing in the code)
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Reaction Time Represents the speed of information processing When RT is lengthened relative to a control trial, that means at least one stage of info processing became longer How do you test for it?
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Types of Reaction Time Tasks Simple RT : One stimulus and one response. Fastest (e.g. 200 ms) Choice RT : 2 or more S-R pairs (280 ms) Discrimination RT : ―Go - no go‖ RT (230 ms)
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Factors That Influence Reaction Time Number of possible stimuli Precuing S-R Compatibility Movement Complexity, Accuracy Practice Double Stimulation
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Hick’s Law There is a stable relationship between the number of stimulus-response options and
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Chapter 2 Action Preparation - Action Preparation Chapter 8...

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