Examining Impulse-Variability Theory and the Speed-Accuracy Trade-Off in Children’s Overarm Throwing Performance

Motor Control ◽  
2018 ◽  
Vol 22 (2) ◽  
pp. 199-210 ◽  
Author(s):  
Sergio L. Molina ◽  
David F. Stodden
Keyword(s):  
Trade Off ◽  
Overarm Throwing ◽  
Impulse Variability ◽  
Speed Accuracy

Examining Impulse-Variability in Kicking

Motor Control ◽  
2016 ◽  
Vol 20 (3) ◽  
pp. 222-232 ◽  
Author(s):  
Andrew Chappell ◽  
Sergio L. Molina ◽  
Jonathon McKibben ◽  
David F. Stodden
Keyword(s):  
Repeated Measures ◽  
Maximum Speed ◽  
Spatial Accuracy ◽  
Spatial Error ◽  
Trade Off ◽  
Old Adults ◽  
Radial Error ◽  
Skill Performance ◽  
Impulse Variability ◽  
Speed Accuracy

This study examined variability in kicking speed and spatial accuracy to test the impulse-variability theory prediction of an inverted-U function and the speed-accuracy trade-off. Twenty-eight 18- to 25-year-old adults kicked a playground ball at various percentages (50–100%) of their maximum speed at a wall target. Speed variability and spatial error were analyzed using repeated-measures ANOVA with built-in polynomial contrasts. Results indicated a significant inverse linear trajectory for speed variability (p < .001, η2= .345) where 50% and 60% maximum speed had significantly higher variability than the 100% condition. A significant quadratic fit was found for spatial error scores of mean radial error (p < .0001, η2 = .474) and subject-centroid radial error (p < .0001, η2 = .453). Findings suggest variability and accuracy of multijoint, ballistic skill performance may not follow the general principles of impulse-variability theory or the speed-accuracy trade-off.

Dual Goals for Speed and Accuracy on the Same Performance Task

2012 ◽  
Vol 11 (3) ◽  
pp. 118-126 ◽  
Author(s):  
Olive Emil Wetter ◽  
Jürgen Wegge ◽  
Klaus Jonas ◽  
Klaus-Helmut Schmidt
Keyword(s):  
Memory Scanning ◽  
Performance Task ◽  
Performance Tasks ◽  
Trade Off ◽  
Test Experiment ◽  
Trade Offs ◽  
New Finding ◽  
Sternberg Paradigm ◽  
Speed Accuracy ◽  
Speed And Accuracy

In most work contexts, several performance goals coexist, and conflicts between them and trade-offs can occur. Our paper is the first to contrast a dual goal for speed and accuracy with a single goal for speed on the same task. The Sternberg paradigm (Experiment 1, n = 57) and the d2 test (Experiment 2, n = 19) were used as performance tasks. Speed measures and errors revealed in both experiments that dual as well as single goals increase performance by enhancing memory scanning. However, the single speed goal triggered a speed-accuracy trade-off, favoring speed over accuracy, whereas this was not the case with the dual goal. In difficult trials, dual goals slowed down scanning processes again so that errors could be prevented. This new finding is particularly relevant for security domains, where both aspects have to be managed simultaneously.

scholarly journals Constructal model of fitts’s law to predict speed–accuracy trade-off

2017 ◽  
Vol 12 (1) ◽  
pp. 44-54
Author(s):  
Satish Boregowda ◽  
Rod Handy ◽  
Darrah Sleeth ◽  
Andrew Merryweather
Keyword(s):  
Trade Off ◽  
Speed Accuracy

scholarly journals Fifty years later: a neurodynamic explanation of Fitts' law

2006 ◽  
Vol 3 (10) ◽  
pp. 649-654 ◽  
Author(s):  
Dan Beamish ◽  
Shabana Ali Bhatti ◽  
I. Scott MacKenzie ◽  
Jianhong Wu
Keyword(s):  
Intrinsic Property ◽  
Motor Behaviour ◽  
Limited Capacity ◽  
Trade Off ◽  
Motor Circuit ◽  
Psychomotor Delay ◽  
Fitts Law ◽  
Human Motor ◽  
Speed Accuracy ◽  
Speed And Accuracy

An intrinsic property of human motor behaviour is a trade-off between speed and accuracy. This is classically described by Fitts' law, a model derived by assuming the human body has a limited capacity to transmit information in organizing motor behaviour. Here, we propose an alternative foundation, based on the neurodynamics of the motor circuit, wherein Fitts' law is an approximation to a more general relationship. In this formulation, widely observed inconsistencies with experimental data are a consequence of psychomotor delay. The methodology developed additionally provides a method to estimate the delay within the motor circuit from the speed-accuracy trade-off alone.

Speed-Accuracy Trade-offs in Motor Behavior: Theories of Impulse Variability

1985 ◽  
pp. 79-123 ◽  
Author(s):  
R. A. Schmidt ◽  
D. E. Sherwood ◽  
H. N. Zelaznik ◽  
B. J. Leikind
Keyword(s):  
Motor Behavior ◽  
Trade Offs ◽  
Behavior Theories ◽  
Impulse Variability ◽  
Speed Accuracy
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