SPEED, ACCURACY, OR SPEED AND ACCURACY AS AN INITIAL DIRECTIVE IN MOTOR LEARNING

1951 ◽  
Vol 3 ◽  
pp. 76 ◽  
Author(s):  
WILLIAM H. SOLLEY
Keyword(s):  
Motor Learning ◽  
Speed Accuracy ◽  
Speed And Accuracy

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 Combining speed and accuracy to control for speed-accuracy trade-offs(?)

2018 ◽  
Vol 51 (1) ◽  
pp. 40-60 ◽  
Author(s):  
Heinrich René Liesefeld ◽  
Markus Janczyk
Keyword(s):  
Trade Offs ◽  
Speed Accuracy ◽  
Speed And 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.

scholarly journals A System Dynamics Model for Human Trust in Automation under Speed and Accuracy Requirements

2019 ◽  
Vol 63 (1) ◽  
pp. 822-826
Author(s):  
Aya Hussein ◽  
Sondoss Elsawah ◽  
Hussein Abbass
Keyword(s):  
System Dynamics ◽  
Relative Importance ◽  
System Dynamics Model ◽  
Dynamics Model ◽  
Model Extension ◽  
Trust In Automation ◽  
Human Decision ◽  
Using Data ◽  
Speed Accuracy ◽  
Speed And Accuracy

Research shows that human trust in automation is a key predictor of human reliance on the automation. Several models have been proposed to capture the interplay between trust and reliance and their combined impacts on task performance. Whereas some models assume that trust is affected by automation reliability, others assume that trust is affected by automation speed. In fact, both speed and reliability can be crucial for mission performance, therefore, these models do not represent the interrelationships among automation speed, automation reliability, human decision making, and subsequent effects on mission performance. To address this gap, we propose a system dynamics model which incorporates both the speed and reliability of automation and their combined effects on trust. Our model explicitly represents the speed-accuracy compromise adopted by the subjects to weigh the perceived relative importance of these aspects while evaluating the reliance decision. The model is calibrated and evaluated using data collected from a human experiment in which 33 subjects interacted with an automated aid for swarm supervision in a foraging mission. The simulation results show that the model can closely replicate and predict the experimental data in terms of the reliance rate and the number of targets collected. Model limitations and further efforts for model extension are discussed.

scholarly journals The Effect of Aerobic Exercise on Speed and Accuracy Task Components in Motor Learning

Sports ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 54 ◽  
Author(s):  
Håvard Stranda ◽  
Monika Haga ◽  
Hermundur Sigmundsson ◽  
Håvard Lorås
Keyword(s):  
Motor Learning ◽  
Aerobic Exercise ◽  
Human Cognition ◽  
Moderate Intensity ◽  
Maximal Heart Rate ◽  
Positive Effects ◽  
Theoretical Approaches ◽  
Keyboard Typing ◽  
Speed And Accuracy ◽  
Typing Task

Acute exercise has an influence on human cognition, and both theoretical approaches and previous investigations suggest that the learning process can be facilitated. A distinction has been made however, between the predominately positive effects on task speed compared to both the negative and null effects on aspects of task accuracy. The aim of this study was to investigate the effect of moderate-intensity aerobic exercise conducted before each practice trial (3 × week) for a period of four weeks, on speed and accuracy components in a novel keyboard typing task. To this end, young adults (n = 26) where randomized to a non-exercise resting group (control) or an exercise group (ergometer cycling at 65% of age-predicted maximal heart rate). Immediately after exercise or resting, participants practiced keyboard typing through specialized online software for a total of 2 h across the study period. All participants improved their speed and accuracy in the keyboard typing task. At 7-day retention, no differences were found between groups. Thus, the degree of improvement on both speed and accuracy task components was not significantly different between the exercise and control group. Further studies are warranted to establish the specific relationship between aerobic exercise and task components in motor learning and retention.

scholarly journals Effects of Multiple Sessions of Cathodal Priming and Anodal HD-tDCS on Visuo Motor Task Plateau Learning and Retention

2020 ◽  
Vol 10 (11) ◽  
pp. 875 ◽  
Author(s):  
Pierre Besson ◽  
Makii Muthalib ◽  
Christophe De Vassoigne ◽  
Jonh Rothwell ◽  
Stephane Perrey
Keyword(s):  
Motor Learning ◽  
Motor Task ◽  
Controlled Study ◽  
Anodal Tdcs ◽  
Retention Performance ◽  
Baseline Training ◽  
Double Blind ◽  
Trade Off ◽  
The Impact ◽  
Speed Accuracy

A single session of priming cathodal transcranial direct current stimulation (tDCS) prior to anodal tDCS (c-a-tDCS) allows cumulative effects on motor learning and retention. However, the impact of multiple sessions of c-a-tDCS priming on learning and retention remains unclear. Here, we tested whether multiple sessions of c-a-tDCS (over 3 consecutive days) applied over the left sensorimotor cortex can further enhance motor learning and retention of an already learned visuo-motor task as compared to anodal tDCS (a-tDCS) or sham. In a between group and randomized double-blind sham-controlled study design, 25 participants separated in 3 independent groups underwent 2 days of baseline training without tDCS followed by 3-days of training with both online and offline tDCS, and two retention tests (1 and 14 days later). Each training block consisted of five trials of a 60 s circular-tracing task intersected by 60 s rest, and performance was assessed in terms of speed–accuracy trade-off represented notably by an index of performance (IP). The main findings of this exploratory study were that multiple sessions of c-a-tDCS significantly further enhanced IP above baseline training levels over the 3 training days that were maintained over the 2 retention days, but these learning and retention performance changes were not significantly different from the sham group. Subtle differences in the changes in speed–accuracy trade-off (components of IP) between c-a-tDCS (maintenance of accuracy over increasing speed) and a-tDCS (increasing speed over maintenance of accuracy) provide preliminary insights to a mechanistic modulation of motor performance with priming and polarity of tDCS.

scholarly journals Confidence predicts speed-accuracy tradeoff for subsequent decisions

2018 ◽  
Author(s):  
Kobe Desender ◽  
Annika Boldt ◽  
Tom Verguts ◽  
Tobias H. Donner
Keyword(s):  
Decision Model ◽  
Previous Trial ◽  
Decision Confidence ◽  
Decision Outcomes ◽  
Decision Policies ◽  
Choice Tasks ◽  
Speed Accuracy ◽  
The Brain ◽  
Speed And Accuracy ◽  
Accuracy Tradeoff

AbstractWhen external feedback about decision outcomes is lacking, agents need to adapt their decision policies based on an internal estimate of the correctness of their choices (i.e., decision confidence). We hypothesized that agents use confidence to continuously update the tradeoff between the speed and accuracy of their decisions: When confidence is low in one decision, the agent needs more evidence before committing to a choice in the next decision, leading to slower but more accurate decisions. We tested this hypothesis by fitting a bounded accumulation decision model to behavioral data from three different perceptual choice tasks. Decision bounds indeed depended on the reported confidence on the previous trial, independent of objective accuracy. This increase in decision bound was predicted by a centro-parietal EEG component sensitive to confidence. We conclude that the brain uses internally computed confidence signals for the ongoing adjustment of decision policies.

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