The Prediction of Pilot Subjective Workload Ratings

1995 ◽  
Vol 39 (1) ◽  
pp. 94-97 ◽  
Author(s):  
Anthony J. Aretz ◽  
Scott F. Shacklett ◽  
Phil L. Acquaro ◽  
Derek Miller
Keyword(s):  
Task Type ◽  
Independent Variables ◽  
Perceived Effort ◽  
Flight Experience ◽  
Subjective Workload ◽  
Correlational Design ◽  
Concurrent Tasks ◽  
Nasa Tlx ◽  
Pilot Selection

This paper investigated potential variables that predict pilot subjective workload ratings. A correlational design was used to regress NASA TLX subjective workload ratings onto four independent variables (the number of concurrent tasks, task type, task combination, and flight experience). A pilot selection simulator was used to present five different flight tasks, in different combinations, to 15 cadets at the USAF Academy. The results indicated the number of concurrent tasks had the largest impact on subjective workload ratings, followed by subjects' flight experience. The data also showed that the effort dimension of the NASA TLX contributed the most variance to the overall weighted workload ratings. The implication for theoreticians and designers is that the number of concurrent tasks, experience, and perceived effort seem to be key contributor to subjective workload ratings.

An Empirical Validation of Subjective Workload Ratings

1996 ◽  
Vol 40 (2) ◽  
pp. 91-95 ◽  
Author(s):  
Anthony J. Aretz ◽  
Chris Johannsen ◽  
Keith Ober
Keyword(s):  
Task Characteristics ◽  
Resource Theory ◽  
Independent Variables ◽  
Flight Experience ◽  
Subjective Workload ◽  
Correlational Design ◽  
Concurrent Tasks ◽  
Multiple Resource Theory ◽  
Nasa Tlx ◽  
Multiple Resource

A correlational design was used to regress NASA TLX subjective workload ratings onto several potential independent variables (i.e., the number of concurrent tasks, task combination, task resource demands, and flight experience) to determine task characteristics that influence pilot subjective workload ratings. A part task simulator was used to present up to six concurrent tasks, in different combinations, to 27 cadets at the USAF Academy. The results indicated the number of concurrent tasks had the largest impact on subjective workload ratings. In terms of multiple resource theory, spatial, verbal, and visual demands (in that order) contributed the most variance. The implication for theoreticians and designers is that the number of concurrent tasks, mental resource demands, and time constraints seem to be key contributors to subjective workload ratings.

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.

An Investigation of the Effect of Latency on the Operator’s Trust and Performance for Manual Multi-robot Teleoperated Tasks

2017 ◽  
Vol 61 (1) ◽  
pp. 390-394 ◽  
Author(s):  
Hunter Rogers ◽  
Amro Khasawneh ◽  
Jeffery Bertrand ◽  
Kapil Chalil Madathil
Keyword(s):  
Confidence Level ◽  
Search And Rescue ◽  
The Other ◽  
Repeated Measure ◽  
Independent Variables ◽  
Subjective Workload ◽  
Dependent Variables ◽  
Independent Variable ◽  
And Performance ◽  
Two Independent Variables

Latency is an important factor when conducting teleoperated missions. This study investigates the effects of latency on a set of dependent variables: performance (measured by time and number of errors), subjective workload, trust, and usability. These measures were tested in a simulated search-and-rescue mission over two levels of two independent variables. One independent variable was the number of robots – one or two (within-subject), and the other independent variable was latency – simulations with and without latency (between-subject.) The significant effect of the independent variables on the dependent variables were checked using repeated measure two-way ANOVA with a confidence level of 95%. The data determined any significant effects that latency and/or the number of robots had on such factors as errors, dependability, reliability, harmful outcomes, temporal demand, and frustration.

The Effects of Subject-Controlled Pacing and Task Type on Sustained Attention and Subjective Workload

1993 ◽  
Vol 120 (3) ◽  
pp. 293-307 ◽  
Author(s):  
Mark W. Scerbo ◽  
Catherine Q. Greenwald ◽  
David A. Sawin
Keyword(s):  
Sustained Attention ◽  
Task Type ◽  
Subjective Workload ◽  
And Task

How Accurately Can an Observer Assess Participant Self-Reported Workload?

2017 ◽  
Vol 61 (1) ◽  
pp. 1486-1487 ◽  
Author(s):  
Logan T. Hale ◽  
Preston A. Long
Keyword(s):  
Working Memory ◽  
Human Factors ◽  
Mental Workload ◽  
The Other ◽  
Subjective Workload ◽  
The Subject ◽  
Nasa Tlx ◽  
The One ◽  
Task Types

Subjective workload assessments are used often in human factors, almost always from the perspective of the one performing the task. How well would an observer or experimenter be able to subjectively rate the mental workload of a task being performed by a subject? In this experiment, participants formed groups of two in which one acted as an experimenter and the other as a subject. The experimenter administered three types of distractor tasks to the subject while the subject held a consonant triad in their working memory. The three tasks were a high difficulty task (counting), a medium difficulty task (writing), and a low difficulty task (drawing). Both experimenter and subject then filled out a NASA-TLX for all three task types. Roles were switched and the process repeated. Significant differences in rating were found for the high difficulty but not the low difficulty task, with the medium difficulty task in between.

scholarly journals HUBUNGAN MOTIVASI KEPALA SEKOLAH DAN BUDAYA SEKOLAH TERHADAP KINERJA GURU SD KECAMATAN JAWAI SELATAN

2021 ◽  
Vol 5 (2) ◽  
pp. 78
Author(s):  
Purnama Sari
Keyword(s):  
Elementary School ◽  
School Culture ◽  
Data Collection ◽  
Elementary School Teachers ◽  
Significant Relationship ◽  
Teacher Performance ◽  
School Teachers ◽  
Design Data ◽  
Independent Variables ◽  
Correlational Design

AbstractThis research is to describe the relationship between principal's motivation and school culture on the performance of elementary school teachers in jawai selatan, Sambas. This study consisted of two independent variables and one dependent variable. They are the principal's motivation (X1) and school culture (X2) as independent variables, and teacher performance (Y)as dependent variable. The subjects of this study are all elementary school teachers. This study uses a quantitative approach with a descriptive correlational design. Data collection techniques used are documentary and questionnaire techniques. The main data collection tool used is a questionnaire (questionnaire) with alternative answers in the form of a Likert scale. Technical analysis or data processing of this study using descriptive statistics and inferential statistics. The results obtained: (1) There is a relationship between the principal's motivation and teacher performance of 25.70%. (2) There is a significant relationship between school culture and an increase in teacher performance of 70.13%. (3) The principal's motivation and school culture have a significant relationship to the performance of teachers in the southern Jawai sub-district with a contribution of 55.70%. Keywords: Motivation, School Culture, Performance of teachers

Comparison of Weighted and Unweighted Task Load Indices for Single-Site Surgery Tasks

2021 ◽  
Vol 10 (1) ◽  
pp. 142-146
Author(s):  
Jia hui Ma ◽  
Bernadette McCrory ◽  
David Claudio
Keyword(s):  
Single Site ◽  
Future Research ◽  
Mixed Effect ◽  
Task Load ◽  
Subjective Workload ◽  
Mixed Effect Models ◽  
Nasa Tlx ◽  
Load Indices ◽  
Pearson Correlations ◽  
Single Site Surgery

Background: The National Aeronautics and Space Administration Task Load Index (NASA-TLX) a nd Surgery Task Load Index (SURG-TLX) are two subjective workload m easurement instruments. Both instruments provide unweighted andweightedworkload measurements. Weighted TLX m easures have seldomly been used byresearchers typically becauseof its high correlation with unweighted TLX a nd addedexperimentaltime to collect pairwise weightings. Therefore, theaim of thestudy wa s to compare weighted TLX scores with unweighted TLX scores and each’s sensitivity for demographic and experimentalfactors. Methods: Two simulated la paroscopic single site surgery tasks were completedusing four surgicalmethods by 25 participants. Pearson correlations, principle componentanalyses and mixed effect models were used to compare the unweightedandweighted TLXscores across tasks a nd methods. Results: There was a high correlation(r > 0.950, p < 0.001) betweentheunweighted TLXscores and the weighted TLX scores. The weighted TLX scores showed better sensitivity to both demographic and experimental factors for both TLX instruments. Conclusion: The overall weighted NASA-TLX and SURG-TLX scores differed from their respective unweighted scores even with a high correlation. The weighted TLXshowed potentialto better discriminate subjective workloadfor single-site ta sks. Future research is needed to identify and validatea more streamlinedweightingmethodparticularly for complex experimental taskslike single-site surgery.

Correlates of Anxiety, Hostility, Depression, and Psychosocial Adjustment in Parents of NICU Infants

2000 ◽  
Vol 19 (5) ◽  
pp. 15-23 ◽  
Author(s):  
Lynn Doering ◽  
Debra Moser ◽  
Kathleen Dracup
Keyword(s):  
Psychosocial Adjustment ◽  
Perceived Control ◽  
Employment Status ◽  
Outcome Variable ◽  
Parental Anxiety ◽  
Independent Variables ◽  
Correlational Design ◽  
Parent Status ◽  
Main Outcome Variable ◽  
Parental Responses

Purpose: The birth of a premature or critically ill infant can result in debilitating parental responses. This study identifies correlates of parental anxiety, hostility, depression, and psychosocial adjustment so that nurses can identify parents likely to need special attention or intervention.Design: An explanatory, correlational design was used.Sample: The study involved 469 parents (mothers = 299, 65 percent; mean age 29.1 ± 6.8 years) of infants hospitalized in five Level III NICUs.Main Outcome Variable: The main outcomes were those variables which correlated with the independent variables and included: parent status (mother or father), ethnicity, employment status, and education.Results: Parents experienced high levels of anxiety, hostility, and depression. Poorer family functioning, lower levels of social support, and lower perceived control were associated with higher levels of anxiety, hostility, and depression and with poorer adjustment. Parental status (mother or father), ethnicity, employment status, and education were significantly related to parental responses.

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