Elasticity and Rigidity Constructs and Ratings of Subjective Workload for Individuals and Groups

2017 ◽  
pp. 51-76 ◽  
Author(s):  
Stephen J. Guastello ◽  
David E. Marra ◽  
Anthony N. Correro ◽  
Maura Michels ◽  
Henry Schimmel
Keyword(s):  
Subjective Workload

The effect of intervening task performance on subjective workload ratings

1984 ◽  
Author(s):  
F. Thomas Eggemeier ◽  
Brian E. Melville ◽  
Mark S. Crabtree
Keyword(s):  
Task Performance ◽  
Subjective Workload

Data and knowledge as predictors of perceptions of display clutter, subjective workload and pilot performance

2009 ◽  
Author(s):  
Amy L. Alexander ◽  
Emily M. Stelzer ◽  
Sang-Hwan Kim ◽  
David B. Kaber ◽  
Lawrence J. Prinzel
Keyword(s):  
Pilot Performance ◽  
Subjective Workload

scholarly journals Robotic-assisted cholecystectomy is superior to laparoscopic cholecystectomy in the initial training for surgical novices in an ex vivo porcine model: a randomized crossover study

2021 ◽  
Author(s):  
E. Willuth ◽  
S. F. Hardon ◽  
F. Lang ◽  
C. M. Haney ◽  
E. A. Felinska ◽  
...  
Keyword(s):  
Laparoscopic Cholecystectomy ◽  
Crossover Study ◽  
Porcine Model ◽  
Haptic Feedback ◽  
Ex Vivo ◽  
Operating Time ◽  
Surgical Performance ◽  
Robotic Assisted ◽  
Subjective Workload ◽  
Randomized Crossover Study

Abstract Background Robotic-assisted surgery (RAS) potentially reduces workload and shortens the surgical learning curve compared to conventional laparoscopy (CL). The present study aimed to compare robotic-assisted cholecystectomy (RAC) to laparoscopic cholecystectomy (LC) in the initial learning phase for novices. Methods In a randomized crossover study, medical students (n = 40) in their clinical years performed both LC and RAC on a cadaveric porcine model. After standardized instructions and basic skill training, group 1 started with RAC and then performed LC, while group 2 started with LC and then performed RAC. The primary endpoint was surgical performance measured with Objective Structured Assessment of Technical Skills (OSATS) score, secondary endpoints included operating time, complications (liver damage, gallbladder perforations, vessel damage), force applied to tissue, and subjective workload assessment. Results Surgical performance was better for RAC than for LC for total OSATS (RAC = 77.4 ± 7.9 vs. LC = 73.8 ± 9.4; p = 0.025, global OSATS (RAC = 27.2 ± 1.0 vs. LC = 26.5 ± 1.6; p = 0.012, and task specific OSATS score (RAC = 50.5 ± 7.5 vs. LC = 47.1 ± 8.5; p = 0.037). There were less complications with RAC than with LC (10 (25.6%) vs. 26 (65.0%), p = 0.006) but no difference in operating times (RAC = 77.0 ± 15.3 vs. LC = 75.5 ± 15.3 min; p = 0.517). Force applied to tissue was similar. Students found RAC less physical demanding and less frustrating than LC. Conclusions Novices performed their first cholecystectomies with better performance and less complications with RAS than with CL, while operating time showed no differences. Students perceived less subjective workload for RAS than for CL. Unlike our expectations, the lack of haptic feedback on the robotic system did not lead to higher force application during RAC than LC and did not increase tissue damage. These results show potential advantages for RAS over CL for surgical novices while performing their first RAC and LC using an ex vivo cadaveric porcine model. Registration number researchregistry6029 Graphic abstract

Tank Crew Performance: Effects of Speech Intelligibility on Target Acquisition and Subjective Workload Assessment

1989 ◽  
Vol 33 (20) ◽  
pp. 1411-1413 ◽  
Author(s):  
Leslie Whitaker ◽  
Leslie Peters
Keyword(s):  
Speech Intelligibility ◽  
Target Acquisition ◽  
Operational Effectiveness ◽  
Assessment Technique ◽  
Training Facility ◽  
Subjective Workload ◽  
Performance Effects ◽  
Target Performance ◽  
Intercom System

Thirty tank crews were tested in the Ft. Knox COFT tank simulator. The COFT simulator is a gunnery training facility. The crew's task was to shoot specified enemy targets. Each crew consisted of a tank commander and a gunner. The commander told the gunner, via an intercom system, which enemy object was the next target. Performance and subjective workload were measured as a function of the speech intelligibility transmitted by the intercom system. Five levels of intelligibility were tested. The measures of operational effectiveness were the number of targets correctly fired upon and the gunner's latency. Subjective workload was measured using the Subjective Workload Assessment Technique (SWAT). Gunner performance and subjective workload covaried across intelligibility levels. Performance was not significantly affected until intelligibility levels fell to 50%. However, SWAT ratings increased linearly with decreasing intelligibility level.

A-92 Assessing Perceived Workload on the Brief Visual Memory Test in Traumatic Brain Injury Survivors

2021 ◽  
Vol 36 (6) ◽  
pp. 1139-1139
Author(s):  
Kristina E Smith ◽  
Daniel W Lopez-Hernandez ◽  
Alexis Bueno ◽  
Rachel A Rugh-Fraser ◽  
Bethany A Nordberg ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Verbal Memory ◽  
Visual Memory ◽  
Memory Performance ◽  
Memory Test ◽  
Short Delay ◽  
Subjective Workload ◽  
Perceived Workload ◽  
Nasa Tlx

Abstract Objective We examined perceived workload as it is related to Brief Visual Memory Test-Revised (BVMT-R) short-delay and long-delay performance in traumatic brain injury (TBI) and healthy comparison (HC) participants. Method The sample consisted of 39 TBI participants and 54 HC participants. Demographically corrected BVMT-R scores were used to evaluate short-delay and long-delay performances. The perceived workload was measured using the NASA-TLX. Results ANOVA revealed that the HC group outperformed the TBI group on the BVMT-R short-delay and long-delay score, p < 05, η p 2 = 0.05. ANCOVAs controlling for age were used to evaluate NASA-TLX group differences. In regards to the NASA-TLX, TBI participants reported higher levels of physical demand, effort, frustration and overall subjective workload on the BVMT-R short-delay compared to HC participants, p < 05, η p 2 = 0.01–0.09. Furthermore, on the long-delay of the BVMT-R, the NASA-TLX revealed that the TBI group reported higher levels of temporal demand, effort, frustration and overall subjective workload compared to the HC group, p < 0.05, η p 2 = 0.05–0.14. Conclusions Results revealed that TBI participants demonstrated worse BVMT-R performances than HC participants. However, TBI survivors reported higher perceived workload demands compared to the HC group in both short-delay and long-delay of the BVMT-R. Our findings suggest that TBI impacts non-verbal memory performance in both BVMT-R short-delay and long-delay. Also, brain injury may be impacting TBI survivors’ awareness of their non-verbal memory performance. Further work is required to determine what drives the impaired perception of non-verbal memory performance among TBI survivors.

Sign in / Sign up

Export Citation Format

Share Document