The effects of workload history on dual task performance

Cox-Fuenzalida, Luz-Eugenia; Angie, Amanda D.

doi:10.1007/s12144-005-1020-y

Cited by 13 publications

(9 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Changes in workload have been associated with significant decrements in performance in both the current study and in past research (Beehr et al 2000;Cox-Fuenzalida 2007;Cox-Fuenzalida and Angie 2005). Hypothesis two predicted that a shift in workload would result in decreased performance as compared to when no shift was present.…”

Section: Discussionsupporting

confidence: 54%

Workload Variability and Social Support: Effects on Stress and Performance

2008

Self Cite

View full text Add to dashboard Cite

The current study investigated the effect of workload variability on performance and stress, as well as the role of social support as a potential intervention. Based on previous research it was predicted that a shift in workload from either high to low or low to high would lower performance and increase stress, while the provision of social support would result in higher performance and lower stress. Results revealed significant decrements in performance following workload shifts, though no increase in stress was perceived. Performance in both workload conditions significantly, but inconsistently, increased following the provision of social support and stress significantly decreased following the shift from high to low workload. Implications and future research steps are discussed further.

show abstract

Section: Discussionsupporting

confidence: 54%

Workload Variability and Social Support: Effects on Stress and Performance

2008

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, distress may be predictive of impairment on multiple task performance (Matthews et al, 1999). It is thus interesting that detrimental effects on performance of both high-to-low and low-to-high transitions have been obtained using dual-task paradigms (Cox-Fuenzalida & Angie, 2005;Cox-Fuenzalida et al, 2006).…”

Section: Discussionmentioning

confidence: 99%

Effects of warned and unwarned demand transitions on vigilance performance and stress

Helton

Shaw

Warm

et al. 2008

Anxiety, Stress & Coping

View full text Add to dashboard Cite

The present study was designed to explore the effects of warned and unwarned demand transitions in vigilance on performance and self-reported stress. Twenty observers (10 women and 10 men) were assigned at random to each of six conditions resulting from the factorial combination of signal salience (high and low salience signals) and switching (no switch, switch with warning, and switch without warning). Performance metrics and self-reported stress state (Task Engagement, Distress, and Worry) were collected. While demand transitions did destabilize subsequent performance, increasing intra-individual variability, overall performance efficiency was uninfluenced by either switching or warning. Demand transitions, whether warned or not, increased self-reported distress. A dynamic model of performance stress may be necessary and research employing vigilance tasks in the future may be useful for developing this performance-stress model.

show abstract

“…The purpose of study 2 was 2-fold: (1) replicating the effects of spatial working memory load on behavioral performance, subjective report, and hemodynamics observed in study 1; and (2) testing how transitions between individualized cognitive load states alter performance, self-reported mental demand and prefrontal hemodynamics. Workload transitions in either increasing or decreasing direction have been shown to consistently hinder performance (Cox-Fuenzalida et al, 2004, 2006; Cox-Fuenzalida and Angie, 2005; Cox-Fuenzalida, 2007). However, these studies were not adapted to individuals and showed little to no performance differences.…”

Section: Studymentioning

confidence: 99%

“…First, we altered cognitive load via altering memory load. The vast majority of previous workload transition studies have used stimulus event rate to alter cognitive load (Cumming and Croft, 1973; Krulewitz et al, 1975; Goldberg and Stewart, 1980; Hancock et al, 1995; Cox-Fuenzalida et al, 2004, 2006; Cox-Fuenzalida and Angie, 2005; Cox-Fuenzalida, 2007; Bowers et al, 2014). Second, we adapted workload transitions to the cognitive states of each individual.…”

Section: General Conclusionmentioning

confidence: 99%

“…Furthermore, when required to accurately identify the accuracy of a numeric expression, as well as respond as quickly as possible, random changes in task demands increase reaction time and decrease response accuracy (Matthews, 1986). In general, transitioning demands decreases task performance (Krulewitz et al, 1975; Thornton, 1985; Matthews, 1986; Hancock et al, 1995; Cox-Fuenzalida et al, 2004, 2006; Cox-Fuenzalida and Angie, 2005; Cox-Fuenzalida, 2007; Bowers et al, 2014), regardless of the direction of task demand transition. However, it should be kept in mind that, even in the presence of workload transitions, relatively high task demands still result in lower performance relative to lower task demands.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cognitive Workload and Workload Transitions Elicit Curvilinear Hemodynamics During Spatial Working Memory

McKendrick

Harwood

2019

Front. Hum. Neurosci.

View full text Add to dashboard Cite

Adaptive training and workload management have the potential to drastically change safety and productivity in high-risk fields—including, air-traffic control, missile defense, and nuclear power-plant operations. Quantifying and classifying cognitive load is important for optimal performance. Brain-based metrics have previously been associated with mental workload. Specifically, attenuation of prefrontal activity has been linked to cognitive overload, a cognitive load state associated with degraded task performance. We hypothesized that a similar nonlinearity would be observed for cognitive underload. When underload and overload effects are combined, they should form a cubic function in lateral prefrontal cortex as a function of working memory load. The first of two studies assessed the relationships between spatial working memory load with subjective, behavioral and hemodynamic measures. A cubic function was observed in left dorsolateral prefrontal cortex (LDLPFC; Brodmann’s Area 46) relating working memory load to changes in oxygenated hemoglobin (HbO). The second, two-part study tested the effects of workload transitions to different cognitive load states. Part-one replicated the effects observed in study one and identified transition points for individual performers. Part-two assessed the effects of transitioning to different cognitive load states. Cognitive load state transitions caused a deviation between behavioral measures and induced a significant change in the cubic function relating LDLPFC HbO and working memory load. From these observations, we present a hypothesis associating workload transitions with the disruption of cognitive process integration.

show abstract

The effects of workload history on dual task performance

Cited by 13 publications

References 11 publications

Workload Variability and Social Support: Effects on Stress and Performance

Workload Variability and Social Support: Effects on Stress and Performance

Effects of warned and unwarned demand transitions on vigilance performance and stress

Cognitive Workload and Workload Transitions Elicit Curvilinear Hemodynamics During Spatial Working Memory

Contact Info

Product

Resources

About