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Assessing Motor PerformanceAssessing Motor Performance
Performance Outcome Performance Outcome MeasuresMeasures
Measurement of the movement result
– Reaction Time– Movement Time– Error Scores– Distance
Movement ResponseMovement Response
signal initiationof movement
completion of movement
ReactionTime
MovementTime
Reaction TimeReaction Time
Simple - involves one external signal & one response
Reaction TimeReaction Time
Choice - involves multiple signals & multiple responses
Reaction TimeReaction TimeDiscrimination - involves multiple
choices & single responses
Movement ResponseMovement Response
Reaction time and movement time used together to determine whether movement is being planned in advance or during execution
Practical Implication?
Performance ErrorsPerformance Errors
Absolute Error - measures the overall amount of error in performance
X1 + X2| + |X3| + …/ # trials
(without regard to sign)
Performance ErrorsPerformance Errors
Variable Error - represents the degree of consistency or variability associated with a performance
(X1) + (X2) + (X3) + …/ # trials
consider sign
Performance ErrorsPerformance Errors
Constant error - measures level of bias in performance - considers amount and direction of error
CE - (CE) /# trials# trials
2 2
Understanding ErrorUnderstanding Error4
3
21
0
+
AE = 2.00
CE = 2.00
VE = 1.00
Understanding ErrorUnderstanding Error4
3
21
0
+
AE = 2.00
CE = -2.00
VE = 1.00
Understanding ErrorUnderstanding Error4
3
21
0
+
AE = 2.00
CE = 0.00
VE = 2.16
Understanding ErrorUnderstanding Error4
3
21
0
+
AE = 2.00
CE = -1.00
VE = 2.24
Process MeasuresProcess Measures
Measurement of the production of movement
– Force Output– EMG– Velocity– Displacement
Response Process MeasuresResponse Process Measures
Kinematic Descriptors - quality of motion– Video film analysis
Response Process MeasuresResponse Process Measures
Kinetic Descriptors - forces during motion– Force plate measures
