scholarly journals User Testing an Information Foraging Tool for Ambulatory Surgical Site Infection Surveillance

2018 ◽  
Vol 09 (04) ◽  
pp. 791-802 ◽  
Author(s):  
Dean Karavite ◽  
Matthew Miller ◽  
Mark Ramos ◽  
Susan Rettig ◽  
Rachael Ross ◽  
...  
Keyword(s):  
Cognitive Load ◽  
Health And Safety ◽  
Surgical Site Infections ◽  
Information Foraging ◽  
Four Dimensions ◽  
Task Load ◽  
Infection Surveillance ◽  
Nasa Tlx ◽  
Nasa Task Load Index ◽  
Infection Preventionists

Background Surveillance for surgical site infections (SSIs) after ambulatory surgery in children requires a detailed manual chart review to assess criteria defined by the National Health and Safety Network (NHSN). Electronic health records (EHRs) impose an inefficient search process where infection preventionists must manually review every postsurgical encounter (< 30 days). Using text mining and business intelligence software, we developed an information foraging application, the SSI Workbench, to visually present which postsurgical encounters included SSI-related terms and synonyms, antibiotic, and culture orders. Objective This article compares the Workbench and EHR on four dimensions: (1) effectiveness, (2) efficiency, (3) workload, and (4) usability. Methods Comparative usability test of Workbench and EHR. Objective test metrics are time per case, encounters reviewed per case, time per encounter, and retrieval of information meeting NHSN definitions. Subjective measures are cognitive load using the National Aeronautics and Space Administration (NASA) Task Load Index (NASA TLX), and a questionnaire on system usability and utility. Results Eight infection preventionists participated in the test. There was no difference in effectiveness as subjects retrieved information from all cases, using both systems, to meet the NHSN criteria. There was no difference in efficiency in time per case between the Workbench and EHR (8.58 vs. 7.39 minutes, p = 0.36). However, with the Workbench subjects opened fewer encounters per case (3.0 vs. 7.5, p = 0.002), spent more time per encounter (2.23 vs. 0.92 minutes, p = 0.002), rated the Workbench lower in cognitive load (NASA TLX, 24 vs. 33, p = 0.02), and significantly higher in measures of usability. Conclusion Compared with the EHR, the Workbench was more usable, short, and reduced cognitive load. In overall efficiency, the Workbench did not save time, but demonstrated a shift from between-encounter foraging to within-encounter foraging and was rated as significantly more efficient. Our results suggest that infection surveillance can be better supported by systems applying information foraging theory.

scholarly journals A-111 The Relationship between Bilingualism and Perceived Workload on the Symbol Digit Modalities Test in Traumatic Brain Injury Survivors

2020 ◽  
Vol 35 (6) ◽  
pp. 904-904
Author(s):  
Lopez-Hernandez D ◽  
Litvin P ◽  
Rugh-Fraser R ◽  
Cervantes R ◽  
Martinez F ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Language Use ◽  
Group Differences ◽  
Task Load ◽  
Language Groups ◽  
Perceived Workload ◽  
Nasa Tlx ◽  
Nasa Task Load Index ◽  
The Relationship

Abstract Objective We evaluated perceived workload (measured by the NASA Task Load Index; NASA-TLX) as related to Symbol Digit Modalities Test (SDMT) performances in monolingual and bilingual traumatic brain injury (TBI) survivors and healthy comparison participants (HC). Method The sample consisted of 28 TBI survivors (12 monolinguals & 16 bilinguals) and 50 HC (20 monolinguals & 30 bilinguals). SDMT written (SDMT-W) and SDMT oral (SDMT-O) were used to evaluate group differences. Results ANCOVA, controlling for age, revealed that the HC group outperformed the TBI group on SDMT-W, p = .001, and SDMT-O, p = .047. Furthermore, bilinguals outperformed monolinguals on SDMT-W, p = .017. On the NASA-TLX, an interaction emerged on temporal demand rating, p = .023, with TBI bilinguals reporting higher temporal demand on SDMT tasks compared to TBI monolinguals, while the HC monolingual participants reported higher temporal demands ratings compared to HC bilingual participants. Furthermore, monolingual participants showed higher levels of frustration with regard to the SDMT task compared to bilingual participants, p = .029. Conclusion Our data revealed TBI survivors underperformed on both SDMT trials compared to the HC participants. Also, bilingual participants demonstrated better SDMT-W performances compared to monolingual participants. Furthermore, our TBI bilingual sample reported themselves to be more rushed to complete the SDMT compared to monolingual TBI sample, but they were less frustrated. Meanwhile, our HC monolingual sample felt more rushed to complete the SDMT tasks compared to HC bilingual participants, but they were less frustrated. While we observed differences in workload ratings between language groups, it is unclear if language use, and/or other variables are driving these results.

scholarly journals Analisis Beban Kerja Menggunakan Metode Nasa - Task Load Index Pada Karyawan Telkom Applied Science School Bandung

2019 ◽  
Vol 5 (2) ◽  
pp. 1-6
Author(s):  
Santika Sari
Keyword(s):  
Applied Science ◽  
Task Load ◽  
Science School ◽  
Nasa Tlx ◽  
Nasa Task Load Index

Telkom Apllied Science Schoolmerupakan salah satu fakultas pada universitas telkom yang memiliki jumlah progam studi lebih banyak dibandingkan dengan fakultas lain. Oleh karena itu perlu dilakukan perhitungan beban kerja pada karyawan bidang akademik pada fakultas tersebut untuk mengetahui seberapa besar beban kerja mental yang dialami oleh karyawan dan faktor apa yang mempengaruhi  beban kerja tersebut. Pengukuran beban kerja pada karyawan bidang akademik ini dapat menentukan langkah yang tepat untuk menjaga produktivitas kerja. Salah satu metode yang dapat mengukur beban kerja mental adalah NASA-TLX. Metode ini membagi beban kerja menjadi 6 aspek elemen kerja. Dalam pengukurannya metode NASA TLX dibagi menjadi dua tahap, yaitu melakukan perbandingan tiap skala dan melakukan pemberian nilai terhadap pekerjaan. Hasil dari perhitungan NASA-TLX pada karyawan bidang akademik berada pada tingkat beban kerja yang berat. Elemen beban kerja yang paling dominan pada karyawan tersebut adalah temporal demand dan effort

scholarly journals Gestão de facilidades mediada por BIM em ambiente escolar

2019 ◽  
Author(s):  
Luís Felipe Sorgini Peterlini ◽  
Regina Coeli Ruschel
Keyword(s):  
Building Information Modeling ◽  
Information Modeling ◽  
Task Load ◽  
Building Information ◽  
Nasa Tlx ◽  
Nasa Task Load Index

Foi realizada a avaliação de uma solução mobile, o software Autodesk BIM 360 Ops, aplicada à Gestão de Facilidades de um ambiente escolar, o bloco de salas de aula da Faculdade de Engenharia Civil, Arquitetura e Urbanismo da Unicamp (FEC). A solução é baseada na tecnologia BIM (Building Information Modeling). Primeiramente foi analisado o atual modo de operação do departamento de Gestão de Facilidades da FEC e depois foi implementada uma solução equivalente BIM 360 Ops. Aplicouse o protocolo Nasa Task Load Index (NASA-TLX) junto aos usuários da edificação para aferir a carga de trabalho exigida na execução da tarefa de utilização do software. Conclusivamente, analisou-se a possibilidade de implementação da solução nos processos realizados pelo departamento de Gestão de Facilidades da FEC.

Workload differences across command levels and emergency response organizations during a major joint training exercise

2016 ◽  
Vol 14 (4) ◽  
pp. 289 ◽  
Author(s):  
Erik G. Prytz, PhD ◽  
Jonas Rybing, MSc ◽  
Carl-Oscar Jonson, PhD
Keyword(s):  
Emergency Response ◽  
Large Scale ◽  
Outcome Measure ◽  
Task Load ◽  
Workload Measurement ◽  
High Workload ◽  
Mental Demands ◽  
Nasa Tlx ◽  
Nasa Task Load Index ◽  
Different Levels

Objective: This study reports on an initial test using a validated workload measurement method, the NASA Task Load Index (TLX), as an indicator of joint emergency exercise effectiveness. Prior research on emergency exercises indicates that exercises must be challenging, ie, result in high workload, to be effective. However, this is often problematic with some participants being underloaded and some overloaded. The NASA TLX was used to test for differences in workload between commanders and subordinates and among three different emergency response organizations during a joint emergency exercise.Design: Questionnaire-based evaluation with professional emergency responders.Setting: The study was performed in conjunction with a large-scale interorganizational joint emergency exercise in Sweden.Participants: A total of 20 participants from the rescue services, 12 from the emergency medical services, and 12 from the police participated in the study (N = 44). Ten participants had a command-level role during the exercise and the remaining 34 were subordinates.Main Outcome Measure(s): The main outcome measures were the workload subscales of the NASA TLX: mental demands, physical demands, temporal demands, performance, effort, and frustration. Results: The results showed that the organizations experienced different levels of workload, that the commanders experienced a higher workload than the subordinates, and that two out of three organizations fell below the twenty-fifth percentile of average workload scores compiled from 237 prior studies.Conclusions: The results support the notion that the NASA TLX could be a useful complementary tool to evaluate exercise designs and outcomes. This should be further explored and verified in additional studies.

The Effects Of Anxiety And Seductive Details On Cognitive Load And Learning

2018 ◽  
Vol 62 (1) ◽  
pp. 1151-1155
Author(s):  
Ecem Olcum ◽  
Valerie K. Sims
Keyword(s):  
Cognitive Load ◽  
Cognitive Processing ◽  
Learning Performance ◽  
Seductive Details ◽  
Task Load ◽  
Transfer And Retention ◽  
Learning Research ◽  
Meaningful Relationships ◽  
Nasa Task Load Index ◽  
The Relationship

This research seeks to understand the interaction between anxiety, seductive details, cognitive load, and learning. Research investigating the seductive details effect in learning and anxiety with relation to cognitive load has not reached a consistent conclusion. Additionally, to our knowledge, no previous study has looked at the relationship between anxiety and seductive details. Ninety five college students read a passage about lightning formation either with negative seductive details, neutral seductive details, or no seductive details. Learning performance was measured with transfer and retention tests, and cognitive load was measured by using NASA Task Load Index. The results indicated helpful effects of negative but not neutral seductive details on problem-solving test for individuals with higher fear from storms. Results showed no meaningful relationships between the seductive details effect, cognitive load, and learning performance. Anxiety producing information, in small amounts, can benefit higher order cognitive processing.

scholarly journals Surgery Task Load Index in Cardiac Surgery: Measuring Cognitive Load Among Teams

2020 ◽  
pp. 155335062093493
Author(s):  
Lauren R. Kennedy-Metz ◽  
Hill L. Wolfe ◽  
Roger D. Dias ◽  
Steven J. Yule ◽  
Marco A. Zenati
Keyword(s):  
Cardiac Surgery ◽  
Cognitive Load ◽  
Subjective Assessment ◽  
Team Members ◽  
Task Load ◽  
Surgical Complexity ◽  
General Populations ◽  
Nasa Task Load Index ◽  
The Relationship ◽  
Over Time

Background. The most commonly used subjective assessment of perceived cognitive load, the NASA Task Load Index (TLX), has proven valuable in measuring individual load among general populations. The surgery task load index (SURG-TLX) was developed and validated to measure cognitive load specifically among individuals within a surgical team. Notably, the TLX lacks temporal sensitivity in its typical retrospective administration. Objective. This study sought to expand the utility of SURG-TLX by investigating individual measures of cognitive load over time during cardiac surgery, and the relationship between individual and team measures of cognitive load and proxies for surgical complexity. Materials & Methods. SURG-TLX was administered retrospectively in the operating room immediately following each case to approximate cognitive load before, during, and after cardiopulmonary bypass for cardiac surgery team members (surgeon, anesthesiologist, and perfusionist). Correlations were calculated to determine the relationship of individual and team measures of cognitive load over the entire procedure with bypass length and surgery length. Results. Results suggest that perceived cognitive load varies throughout the procedure such that cognitive load during bypass significantly differs compared to before or after bypass, across all 3 roles. While on bypass, results show that anesthesiologists experience significantly lower levels of perceived cognitive load than both surgeons and perfusionists. Correlational analyses reveal that perceived cognitive load of both the surgeon and the team had significant positive associations with bypass length and surgery length. Conclusion. Our findings support the utility of SURG-TLX in real cardiac cases as a measure of cognitive load over time, and on an individual and team-wide basis.

scholarly journals THE EFFECTIVENESS OF COMPUTER SIMULATION WITH THE ELECTRONIC CIRCUIT TOWARDS STUDENTS’ MOTIVATION, ACHIEVEMENT, AND COGNITIVE LOAD

2019 ◽  
pp. 131-139
Author(s):  
Nurul Ihsaniah Omar ◽  
Abu Bakar Ibrahim
Keyword(s):  
Computer Simulation ◽  
Cognitive Load ◽  
Electronic Circuit ◽  
Load Test ◽  
Instructional Materials ◽  
School Level ◽  
Task Load ◽  
Secondary School Level ◽  
Post Test ◽  
Nasa Task Load Index

This study aims to evaluate the effectiveness of computer simulation with the electronic circuit on students’ motivation, achievement, and cognitive load. The assessment is done through the post-test, Instructional Materials Motivational Scale (IMMS) questions and the NASA Task Load Index cognitive load test. This study discusses the development of LiveWire simulation also the laboratory worksheet for the LiveWire software that will be developed for the subject Design & Technology for Form Three students at the secondary school level. The evaluation of the LiveWire software and the laboratory worksheet that will be developed involves the evaluation of the usability and users’ satisfaction. The method of delivery using LiveWire is a systematic step in the exploration into the use of simulation for electronic circuits. LiveWire is also suitable and is capable of increasing the development of meaningful knowledge among students. This is because of the strategy of use of the laboratory worksheet in helping the students to explore into and master a simulation application, especially for novice learners.

scholarly journals Ageing drivers’ mental workload in real-time driving tasks based on subjective and objective measures

2021 ◽  
Vol 9 (3B) ◽  
Author(s):  
Nurul Izzah Abd Rahman ◽  
◽  
Siti Zawiah Md Dawal ◽  
Nukman Yusoff ◽  
◽  
...  
Keyword(s):  
Mental Workload ◽  
Control Group ◽  
Complex Situation ◽  
The Road ◽  
Task Load ◽  
Significant Difference ◽  
Nasa Tlx ◽  
On The Road ◽  
Nasa Task Load Index ◽  
And Control

The ageing drivers’ population is increasing rapidly, and they are exposed to disabilities due to degenerative processes, thus affecting their driving performance. The main objective of this study is to determine the mental workload of ageing drivers, while the second objective is to compare the mental workload between ageing drivers and control group. The methodology consisted of on-the-road experimental driving tasks that comprised three levels of situation complexity. The NASA-Task Load Index (NASA-TLX) and electroencephalogram (EEG) were measured on 30 drivers. The NASA-TLX scores revealed that the ageing drivers’ mean physical demand score was the highest compared to others in moderately complex situation and very complex situation, scoring 37.25 and 43.50, respectively. Meanwhile, for electroencephalogram signals’ fluctuation, results showed that situation complexity had significant effects on RPθ and RPα of channel locations FZPZ and O1O2. There was a significant difference in the weighted workload scores for the ageing drivers and control group in simple situation, while there was no significant difference found in RPθ and RPα bands at all channel locations. The findings would be beneficial as a guideline for designers, manufacturers, developers, and policy makers in designing better driving environment for ageing drivers.

scholarly journals High density optical neuroimaging predicts surgeons’s subjective experience and skill levels

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0247117
Author(s):  
Hasan Onur Keles ◽  
Canberk Cengiz ◽  
Irem Demiral ◽  
Mehmet Mahir Ozmen ◽  
Ahmet Omurtag
Keyword(s):  
Machine Learning ◽  
Cognitive Load ◽  
Subjective Experience ◽  
High Density ◽  
Sufficient Information ◽  
Skill Levels ◽  
Task Load ◽  
Nasa Tlx ◽  
Channel Separation ◽  
Traditional Approaches

Measuring cognitive load is important for surgical education and patient safety. Traditional approaches of measuring cognitive load of surgeons utilise behavioural metrics to measure performance and surveys and questionnaires to collect reports of subjective experience. These have disadvantages such as sporadic data, occasionally intrusive methodologies, subjective or misleading self-reporting. In addition, traditional approaches use subjective metrics that cannot distinguish between skill levels. Functional neuroimaging data was collected using a high density, wireless NIRS device from sixteen surgeons (11 attending surgeons and 5 surgery resident) and 17 students while they performed two laparoscopic tasks (Peg transfer and String pass). Participant’s subjective mental load was assessed using the NASA-TLX survey. Machine learning approaches were used for predicting the subjective experience and skill levels. The Prefrontal cortex (PFC) activations were greater in students who reported higher-than-median task load, as measured by the NASA-TLX survey. However in the case of attending surgeons the opposite tendency was observed, namely higher activations in the lower v higher task loaded subjects. We found that response was greater in the left PFC of students particularly near the dorso- and ventrolateral areas. We quantified the ability of PFC activation to predict the differences in skill and task load using machine learning while focussing on the effects of NIRS channel separation distance on the results. Our results showed that the classification of skill level and subjective task load could be predicted based on PFC activation with an accuracy of nearly 90%. Our finding shows that there is sufficient information available in the optical signals to make accurate predictions about the surgeons’ subjective experiences and skill levels. The high accuracy of results is encouraging and suggest the integration of the strategy developed in this study as a promising approach to design automated, more accurate and objective evaluation methods.

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