scholarly journals A meta-analytic review of the reliability of the Index of Cognitive Activity concerning task-evoked cognitive workload and light influences

2021 ◽  
Vol 220 ◽  
pp. 103402
Author(s):  
Julia N. Czerniak ◽  
Nikolas Schierhorst ◽  
Christopher Brandl ◽  
Alexander Mertens ◽  
Maximilian Schwalm ◽  
...  
Keyword(s):  
Cognitive Activity ◽  
Cognitive Workload ◽  
Analytic Review ◽  
Index Of Cognitive Activity

scholarly journals Psychometric Properties of NASA-TLX and Index of Cognitive Activity as Measures of Cognitive Workload in Older Adults

2020 ◽  
Vol 10 (12) ◽  
pp. 994
Author(s):  
Hannes Devos ◽  
Kathleen Gustafson ◽  
Pedram Ahmadnezhad ◽  
Ke Liao ◽  
Jonathan D. Mahnken ◽  
...  
Keyword(s):  
Older Adults ◽  
Cognitive Activity ◽  
Event Related Potentials ◽  
Self Report ◽  
Cognitive Workload ◽  
Wide Range ◽  
Related Potentials ◽  
The Mean ◽  
Nasa Tlx ◽  
Index Of Cognitive Activity

Cognitive workload is increasingly recognized as an important determinant of performance in cognitive tests and daily life activities. Cognitive workload is a measure of physical and mental effort allocation to a task, which can be determined through self-report or physiological measures. However, the reliability and validity of these measures have not been established in older adults with a wide range of cognitive ability. The aim of this study was to establish the test–retest reliability of the National Aeronautics and Space Administration Task Load Index (NASA-TLX) and Index of Cognitive Activity (ICA), extracted from pupillary size. The convergent validity of these measures against event-related potentials (ERPs) was also investigated. A total of 38 individuals with scores on the Montreal Cognitive Assessment ranging between 17 and 30 completed a working memory test (n-back) with three levels of difficulty at baseline and at a two-week follow-up. The intraclass correlation coefficients (ICC) values of the NASA-TLX ranged between 0.71 and 0.81, demonstrating good to excellent reliability. The mean ICA scores showed fair to good reliability, with ICCs ranging between 0.56 and 0.73. The mean ICA and NASA-TLX scores showed significant and moderate correlations (Pearson’s r ranging between 0.30 and 0.33) with the third positive peak of the ERP at the midline channels. We conclude that ICA and NASA-TLX are reliable measures of cognitive workload in older adults. Further research is needed in dissecting the subjective and objective constructs of cognitive workload.

scholarly journals The Index of Cognitive Activity - Eligibility for task-evoked informational strain and robustness towards visual influences

2021 ◽  
Vol 92 ◽  
pp. 103342
Author(s):  
Julia N. Czerniak ◽  
Nikolas Schierhorst ◽  
Valeria Villani ◽  
Lorenzo Sabattini ◽  
Christopher Brandl ◽  
...  
Keyword(s):  
Cognitive Activity ◽  
Index Of Cognitive Activity

scholarly journals Optimizing the usage of pupillary based indicators for cognitive workload

2021 ◽  
Vol 14 (2) ◽  
Author(s):  
Benedict Fehringer
Keyword(s):  
Individual Differences ◽  
Cognitive Activity ◽  
Individual Performance ◽  
Cognitive Workload ◽  
Mean Values ◽  
Before And After ◽  
The Mean ◽  
The Difference ◽  
And Behavior ◽  
Simple Fixation

The Index of Cognitive Activity (ICA) and its open-source alternative, the Index of Pupillary Activity (IPA), are pupillary-based indicators for cognitive workload and are independent of light changes. Both indicators were investigated regarding influences of cognitive demand, fatigue and inter-individual differences. In addition, the variability of pupil changes between both eyes (difference values) were compared with the usually calculated pupillary changes averaged over both eyes (mean values). Fifty-five participants performed a spatial thinking test, the R-Cube-Vis Test, with six distinct difficulty levels and a simple fixation task before and after the R-Cube-Vis Test. The distributions of the ICA and IPA were comparable. The ICA/IPA values were lower during the simple fixation tasks than during the cognitively demanding R-Cube-Vis Test. A fatigue effect was found only for the mean ICA values. The effects of both indicators were larger between difficulty levels of the test when inter-individual differences were controlled using z-standardization. The difference values seemed to control for fatigue and appeared to differentiate better between more demanding cognitive tasks than the mean values. The derived recommendations for the ICA/IPA values are beneficial to gain more insights in individual performance and behavior during, e.g., training and testing scenarios.

Blinks as an index of cognitive activity during reading

1991 ◽  
Vol 26 (2) ◽  
pp. 108-116 ◽  
Author(s):  
Lois N. Orchard ◽  
John A. Stern
Keyword(s):  
Cognitive Activity ◽  
Index Of Cognitive Activity

scholarly journals Reliability and Validity of Cognitive Workload in Older Adults

2020 ◽  
Author(s):  
Hannes Devos ◽  
Kathleen Gustafson ◽  
Pedram Ahmadnezhad ◽  
Ke Liao ◽  
Jonathan D. Mahnken ◽  
...  
Keyword(s):  
Older Adults ◽  
Intraclass Correlation ◽  
Cognitive Activity ◽  
Reliability And Validity ◽  
Event Related Potentials ◽  
Self Report ◽  
Cognitive Workload ◽  
Wide Range ◽  
Related Potentials ◽  
Nasa Tlx

AbstractCognitive workload (mental effort) is a measure of attention allocation to a task, which can be administered through self-report or physiological measures. Cognitive workload is increasingly recognized as an important determinant of performance in cognitive tests and daily life activities. However, the reliability and validity of these measures have not been established in older adults with a wide range of cognitive ability. The aim of this study was to establish the test-retest reliability of the NASA-Task Load Index (NASA-TLX) and Index of Cognitive Activity (ICA), extracted from pupillary size. The convergent validity of these measures against event-related potentials (ERPs) was also investigated. A total of 38 individuals with scores on the Montreal Cognitive Assessment ranging between 17 and 30 completed a working memory test (n-back) with three levels of difficulty at baseline and two-week follow-up. Intraclass correlation coefficients (ICC) values of the NASA-TLX ranged between 0.71 and 0.81, demonstrating good to excellent reliability. Mean ICA scores showed fair to good reliability, with ICC’s ranging between 0.56 and 0.73. Mean ICA and NASA-TLX scores showed significant and moderate correlations (Pearson r range between 0.30 and 0.33) with P3 ERP at the midline channels. We conclude that ICC and NASA-TLX are reliable measures of cognitive workload in older adults. Further research is needed in dissecting the subjective and objective constructs of cognitive workload.

The Type of Temperament, Mood, and Strategies of Categorization

2012 ◽  
Vol 33 (4) ◽  
pp. 227-236 ◽  
Author(s):  
Agata Wytykowska
Keyword(s):  
Information Processing ◽  
Negative Mood ◽  
Cognitive Activity ◽  
Processing Capacity ◽  
Affective Value ◽  
The Relationship ◽  
The Way

In Strelau’s theory of temperament (RTT), there are four types of temperament, differentiated according to low vs. high stimulation processing capacity and to the level of their internal harmonization. The type of temperament is considered harmonized when the constellation of all temperamental traits is internally matched to the need for stimulation, which is related to effectiveness of stimulation processing. In nonharmonized temperamental structure, an internal mismatch is observed which is linked to ineffectiveness of stimulation processing. The three studies presented here investigated the relationship between temperamental structures and the strategies of categorization. Results revealed that subjects with harmonized structures efficiently control the level of stimulation stemming from the cognitive activity, independent of the affective value of situation. The pattern of results attained for subjects with nonharmonized structures was more ambiguous: They were as good as subjects with harmonized structures at adjusting the way of information processing to their stimulation processing capacities, but they also proved to be more responsive to the affective character of stimulation (positive or negative mood).

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