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Motor skills

Speed VS/ Accuracy

QuestionAnswer
Error difference between the actual state and desired state
Accuracy how close to the desired state rather than the actual state
Error vs Accuracy accuracy increase when you practice (error decrease) error increase the less you practice (acc. decrease)
Error subdivisions -absolute error -constant error -variable error
Absolute error the absolute deviation (difference) from target ex. difference between 3 points on target
Constant error Takes BIAS into consideration (+ or -) ex. close in one area around target or all over the place
Variable error describe the SPREAD of error accuracy vs precision
Accuracy subdivisions -spatial accuracy -temporal accuracy
Spatial accuracy closeness to target in space ex. hitting target
Temporal accuracy Coincide of when something happens ex. hitting a drum
SPATIAL/TEMP/BOTH Free throw Spatial accuracy
SPATIAL/TEMP/BOTH Mini golf (w/ windmill) both
SPATIAL/TEMP/BOTH chuck E cheese (wack-a-mole) both
SPATIAL/TEMP/BOTH Football QB pass both
SPATIAL/TEMP/BOTH Bass Drum temporal accuracy
SPATIAL/TEMP/BOTH Penitential kick spatial accuracy
SPATIAL/TEMP/BOTH Karaoke temporal accuracy
SPATIAL/TEMP/BOTH Baseball hitting both
SPATIAL/TEMP/BOTH T-ball spatial accuracy
If Temporal accuracy is Fast.... -Movement time decrease -Accuracy decrease
If spatial accuracy is Slow... -Movement time increase -accuracy increase
Fitts Tapping Task 1. rapid alternating task/movement 2. Tap back & Forth between boxes (speed ^ Acc v) 3. Modify task difficulty (2ways ) a. increase mvt amplitude -distance between b. Decrease target width - make target smaller
As task gets harder... we slow down we trade speed for accuracy (task ^ speed v Acc ^)
As task requires less error... ex. get $1-hit target/ give $10-every miss we slow down
When emphasis is on speed... we go fast we trade accuracy for speed (speed ^ Acc v)
Closed loop theory Movement time ^ increase when accuracy is needed -allow time for info processing
Open Loop Theory Movement time increase with task difficulty -info processing can take place at enpoint of movements
Created by: rmart11